PRAGATI ADARSH ENGLISH SCHOOL

Subject : Opt. Math First Term Examination 2068 F. M. :100

Class : Eight P. M. : 40

Answer all the questions

Group ' A ' [ 8 x ( 2 + 2 ) = 32 ]

1.a)Find the value of x and y if ( x – 2, y – 3 ) = ( 2, 3 )

b)If f (x ) = 2x2 + 3x - 1 find f ( 1 ) X f ( 2 )

2.a) If A = { 1, 2 } and B = { 3, 4 } find A X B and B X A.

b)Write down the domain, range and R-1 of the relation R.

R = { (1, 1 ), ( 2, 4 ), ( 3, 9 ), ( 8, 16 ), ( 5, 25 ), ( 6, 36 ) }

3.a)If a = 4 - then find the value of

b)Solve:

4.a)Find the distance of PQ where P is ( 3, 3 ) and Q is ( 0, 23 )

b)Find a point of x-axis which is equidistant from the points A ( 3, - 2 ) and ( - 1, 2 )

5.a)Change the following degrees into grades.

i)630ii)5400

b)Change the following grades into degrees.

i)60gii)40g

6.a)Change the following radians into degrees.

i)(/3)Cii)(/4)C

b)Change the following radians into grades.

i)(7/20)Cii)(11/20)C

7.a)Change the following degrees into radians.

i)540ii)1080

b)Change the following grades into radian.

i)50gii)800g

8.a)Find the sum of 1080 and 80g in radians.

b)What will be the remainder in degrees if 60g is even out from (11/20)C ?

Group ‘ B ‘ [ 17 x 4 = 68 )

9.Simplify:

10.let f(x) = x2 + 13x + 36, find the values of x, for which f(x) = 0.

11.Let f ( x ) = x2 – 9 find : (i) f ( 2 ), f ( 3 ) and f (6 ) (ii)is f ( 2 ) X f ( 3 ) = f ( 6 ) ?

12.Find the sum of 4x3 - 3x2 + x + 5, 7x2 + 5x - 7 and x4 - 5x2 + 4x + 5

13.Solve:x + x = 6

14.Given A={ 2,4, 6 } and B = { 1,3,5 } find A X B and B X A. Also present A X B and B X A in an arrow diagram.

15.If R = {(1,2),(2,4),(4,8),(8,16),(16,32)} find R-1 and present R and R-1 in arrow diagram.

16.Prove that the points A(7,9),B (3, - 7) and C( -3, 3) are the vertices of an isosceles right angled triangle.

17.Prove that the points A ( -2, - 1 ), B ( 1, 0 ), C ( 4, 3 ) and D ( 1, 2 ) are the vertices of parallelogram.

18.Prove that the points A ( 2 + 3, 5 ), B ( 2, 4 ) and C ( 2, 6 ) are the vertices of equilateral triangle.

19.Prove that the points A ( 5, 4 ), B ( 5, -3 ), C ( -2, -3 ) and D ( -2, 4 ) are the vertices of square.

20.Prove that the point P ( 2, 3 ) is equidistant from the points A ( 5, 7 ), B ( 2, - 2 ) and C ( 6, 6 ).

21.If two angles of a triangle are (2/3)C and 50g. Find third angle in degrees.

22.If two angles of a triangle are 540 and (11/20)C. Find third angles in grades.

23.If two angles of a triangle are 450 and 70g. Find third angles in radians.

24.If the angles of a quadrilateral are in the ratio 3 : 4 : 5 : 6. Find each angle in degrees.

25.If the sum of two angles of a triangle is 450 and then difference is 30g. Find the angles in grades.

PRAGATI ADARSH ENGLISH SCHOOL

Subject : Computer Science First Term. Examination F. M. : 50

Class : Eight 2068 P. M. : 20

1.Answer the following questions.[ 20 ]

a)What is utility software ? Name any three utility software.

b)What is open source software ? Mention any two disadvantages of open source software ?

c)What is language processor ? List its type.

d)Why is a computer called versatile machines ? List any four features of a computer.

e)What is a computer ? How are computers used in education ?

2.Fill in the blanks.[ 5 ]

a)The …………… defines the instructions that the computer is to carry out.

b)Monitor is …………… copy output device.

c)CDs and DVDs are …………… device.

d)Set of instructions that performs some tasks is known as ……………

e)The output of …………… on the paper is permanent.

3.State whether ' True ' or ' False '.[ 5 ]

a)Secondary memory stores data temporarily.

b)Picture quality CRT monitor is better than LCD monitor.

c)A program is a set of instructions that performs some task.

d)MS-DOS is GUI based operating system.

e)A multi-user operating system allows more than one user to access the computer at the same time.

4.Write the appropriate technical words for the following statements.[ 5 ]

a)A device used for playing computer games.

b)A device that produces engineering drawings on a paper.

c)An error in computer that is due to wrong input.

d)A person who writes programs.

e)Application software that is designed for an organization.

5.Write the full form of the following :[ 5 ]

a)SVGA

b)GPL

c)OSS

d)MIPS

e)BIOS

6.Write short notes on :[ 5 ]

a)Customized or Tailored Software.

b)Light Pen

7.Write differences between :[ 5 ]

a)Graphical user interface and command line interface.

b)Packaged software and customized software.

PRAGATI ADARSH ENGLISH SCHOOL

Subject: Social Std. First Term. Examination F. M. : 75 + 25

Class: Eight 2068 P. M. : 40

Attempt all the questions.

Group ' A '

Very short answer questions.[ 20 ]

1)When was Nepal divided into 5 development regions ?

2)How many districts are there in central development regions ?

3)When was Tri-Chandra College established ?

4)What do you see in the picture ?

5)What is development region ?

6)Why is the Far Western Development Region backward ?

7)Why do the infrastructure of development vary from place to place in Nepal ?

8)What do you mean by " Gurukul Education " ?

9)Write any two medical colleges of Nepal.

10)Which places are linked by Prithvi Highway ?

11)When and who established an EnglishSchool first time in Nepal and when ?

12)Why is there social and cultural diversities in our country ?

13)What is ' Development ' ?

14)Why do you need skilled human power ?

15)Why is the Terai called the granary of Nepal ?

16)In what state are the children of Nepal nowadays ?

17)Who observes the festival ‘ Moharram’ ?

18)Who is the chief executive of Nepal ?

19)What and where is the deepest valley of Nepal ?

20)What kind of foreign policy has Nepal adopted ?

Group ' B '

Short answer questions :[ 27 ]

21)Why is Nepal divided into five development regions ?

22)Why is healthy human power important for the development of a country ?

23)Make a list of festivals that are celebrated in Terai, Hill and Himalayan region.

24)What problems are created by inequality in the society ?

25)What do you mean by child rights ? What rights are you enjoying at present ? List them.

26)What are the agents that bring the internal and external changes on the surface of the earth ? Make a list of them.

27)In what kind of climate can Tobacco production be better ? Write the districts.

28)What is foreign policy and what can we learn from the relationship with friendly countries ?

29)Represent the following data in bar graph.

Class / Boys / Girls
8 / 7 / 12
9 / 19 / 15
10 / 9 / 11

Group ' C '

Long answer questions.[ 28 ]

30)Name the holy scripts of the four main religions including their founders.

31)What are the main organs of the government ? Define them and write their relation with each other.

32)Draw an outline map of Nepal and insert the following items in it.

Bagmati River, Muktinath Temple, Tea producing area, Machhapuchhre Himal, Shey Phoksundo lake.

33)What preparation did PN Shah make to conquer Nuwakot ? And what benefit did Gorkha get from the victory over (Nuwakot) it ?

25 marks will be extracted from project work file and internal evaluation.

PRAGATI ADARSH ENGLISH SCHOOL

Subject : EPH First Term. Examination F. M. : 75

Class : Eight 2068 P. M. : 32

Symbol No. 26468FT…………

Group ‘ A ‘

A.Tick the correct answer.[ 1 x 10 = 10 ]

1.Fat soluble vitamins are ......

i)Vitamin ' A', ' D', 'E', and ' K'ii)Vitamin ' B' and 'C' iii)Vitamin ' A', ' B', 'C', ' E'

2.Carbohydrates are ...... nutrients.

i)Energy givingii)Body building iii)Body regulating

3.Protein - Energy Malfunction is the another name for

i)Kwashiokorii)Marasmusiii)Scurvy

4.One of the following is not responsible for Anemia.

i)Lack of vitamin ' C 'ii)Lack of ironiii)Lack of vitamin D.

5.Which age group people is more prone to malnutrition ?

i)0 - 3 years childrenii)0-5 years childreniii)school going children

6.Which disease is caused by lack of proper immunization

i)Goitreii)Polioiii)Anaemia

7.Which of the following is not bacteria.

i)Salmonella typhiii)Plasmodium sp.iii)Shigella shiga

8.Which disease doesn't communicate between two people

i)Kala-azarii)Anaemiaiii)Malaria

9.Black fever is also called for

i)Malariaii)Salmonella typhiiii)Kala-azar

10.Another term for stone is

i)Calculusii)Chancreiii)Tumor

B.Fill in the blanks :[ 1 x 10 = 10 ]

a)Blood pressure is measured by an instrument called ......

b)Syphilis is caused by a bacteria called ......

c)...... is the protective covering of the brain and spinal cord.

d)Visceral leishmaniasis is also known as ......

e)HIV / AIDS was indentified for the first time in ......

f)Chancres are the ......

g)HBV stands for ......

h)The genes that carry cancer information's are called ......

i)Vitamin ' C ' is also called ......

j)...... is also called sunshine vitamin.

PRAGATI ADARSH ENGLISH SCHOOL

Subject : EPH First Term. Examination F. M. : 75

Class : Eight 2068 P. M. : 32

Group ‘ B ‘

A.Answer the following questions in short.[ 10 x 2 = 20 ]

a)What is disease ? Write its types with examples.

b)Write the full form of HIV / AIDS.

c)What is malnutrition. Give examples.

d)Write the types of nutrients. Explain with examples.

e)Write the function of protein and vitamins.

f)What do you mean by hypertension ? What is the normal BP ?

g)What is balanced diet ?

h)Write any two causes of malnutrition.

i)Write any five good sources of vitamins and proteins.

j)The following disease are caused by :

a)Amoebic dysentery

b)Encephalitis

B.Answer the following questions :[ 5 x 3 = 15 ]

a)Describe Meningitis.

b)Make a list of preventive measures of venereal disease.

c)What are the effects of malnutrition ?

C.What is AIDS ? Write the causative agent, symptoms, mode of transmission and preventive measures for it. [ 10 ]

D.Write short notes on :[ 2 x 5 = 10 ]

a)Goitreb)Dysentery

PRAGATI ADARSH ENGLISH SCHOOL

Subject: Nepali First Term. Examination F. M. : 100

Class: Eight 2068 P. M. : 40

!=tn lbOPsf zAbx¿sf] cy{ n]Vg'xf]; M - % _

kmQ], /Do, /Tg, ljb'ifL, pi6«

@=ldNbf] zAb 5fg]/ vfnL 7fpF eg'{xf];\ M - % _

s_k|Zgf]Q/ sljtfsf slj ======x'g\ . - n]vgfy, tf/fgfy, nIdLk|;fb _

v_k|Zg lrGx eGgfn] ======lrGxnfO{ hgfpF5 . - <, ¤, " _

u_' k'~h ' zAbsf] cy{ ======xf] . - /f;, lg0f{o, rnfv _

3_uf]kfnk|;fb l/dfnsf] hGd ======df ePsf] xf] . - lj= ;+= !(&%, &%!(, !(%& _

ª_' b/jf/ ' zLif{s k|aGwsf n]vs ======x'g\ . - /fd/fhf, hLj/fh, afns[i0f _

#=cy{ v'Ng] u/L jfSodf k|of]u ug'{xf];\ M - % _

d]3b"t, cd[t, /Ifs, x'g] xf/ b}j g6f/, eUgfjz]if

$=z'4 kf/L ;fg'{xf];\ M- % _

5fqj[lt, ;'rgf, 8'u{d, n]Vg' kb{5, vfdjGbL

%=tn lbOPsf zAbx¿af6 kbju{ - gfd, ;j{gfd, ljz]if0f, lqmofkb / cJoo _ 5'6\ofpg'xf]; M - % _

d, /fd, lxhf], /ftf], hfG5

^=d 3/ uPsf] 5' . of] k"0f{ jt{dfgsfnsf] jfSo xf] . o:t} k"0f{ kIf a'emfpg] % jfSo n]Vg'xf];\ M - % _

&= pN6f] cy{ lbg] zAb n]Vg'xf];\ M - % _

/ft, km]b, k5fl8, cf]/fnL, dfgjLo

*=pko'Qm ljelQm e/L jfSo k"/f ug'{xf];\ M - % _

s_/fd rDrf ======eft vfG5 . - n], nfO{, sf] _v_ca ======xfdL uDeL/ aGg'k5{ . - b]lv, xfdL, df _

u_/fwfsf n'uf b/fh ======5g\ . - sf], sf, df _3_;fgLn] alxgL ======af]nfO{ . - gf], gf, nfO{ _

ª_" OR5f " / ckfª\u zAbnfO{ xl/ ======n]Vof] . - n], nfO{, df _

(=sf]i7sdf lbOPsf] lgb]{zgfg';f/ jfSo kl/jt{g ug'{xf];\ M - % _

s_xfdL 3/ hfG5f}F . - Psjrg _v_pm uf]bfj/L hfG5 . - jx'jrg _

u_tF u[xsfo{ ub}{g;\ . - s/0f _3_bfO eft ksfpg'x'G5 . - :qLlnª\u _

ª_/dfn] k/LIff lbP5 . - k'lnª\u _

!)=s'g} Ps ljifodf lgaGw n]Vg'xf];\ M - !)) zAb;Dd _ - % _

s_d]/f] ljBfno v_dxfslj sflnbf;u_cg'zf;g

!!=lj/fdL ljbf kfpFm egL k|wfgfWofksnfO{ lgj]bg n]Vg'xf];\ . - % _

!@=tnsf] uBf+z k9L ;f]lwPsf k|Zgx¿sf] 5f]6f] pQ/ lbg'xf];\ M - % _

ckfª\ux¿ xfd|} aGw'afGwj x'g\ . ckfª\ux¿ o;} b]zsf gful/sx¿ klg x'g\ . pgLx¿df klg c?h:t} OR5f cfsfª\Iff efjgf jf rfxgf x'G5g\ . xfdLn] pgLx¿nfO{ l5 M l5 M / b'/\b'/\ ug]{ xf]Og, ;Ddflgt / dof{lbt hLjg afFRg] cj;/ lbg'k5{ . ckfª\u x'g] ljlQs} p;sf ;f]rfO, sNkgfzLntf / sfo{bIftf klg ckfª\u x'G5g\ eGg] ;f]Rg' d"v{tfafx]s s]xL xf]Og .

k|Zgx? M

s_ckfª\ux¿ sf] x'g\ <v_s] s'/f ;f]Rg' d'v{tf xf] <

u_xfdLn] pgLx¿sf nflu ug{gx'g] sfd s] xf] <3_' ckfª\u ' zAbsf] cy{ s] xf] <

ª_of] cg'R5]bsf] pko'\Qm zLif{s lbg'xf];\ .

!#=; k|;ª\u JofVof ug'{xf];\ M- $ _

'b]lvG5 O{z s'g dlGb/df k;]/ '

!$=tnsf k|Zgx¿sf] ;ª\lIfKt pQ/ lbg'xf];\ M- !% _

s_;a}n] vf]Hg] ;'v sxfF x'G5 <

v_dflg;sf nflu sfg'g lsg cfjZos 5 <

u_o'jsn] 3/ 5f8\g'sf] sf/0f s] lyof] <

!%=nfdf] pQ/ lbg'xf];\ M- @! _

s_sljsf] kl/ro ;lxt k|Zgf]Q/ sljtfsf] efjfy{ n]Vg'xf];\ .

v_kf6g b/jf/sf] j0f{g u/ .

u_dg'sf] cGTo s;/L ePsf] lyof] <

PRAGATI ADARSH ENGLISH SCHOOL

Subject : Science First Term. Examination F. M. : 75

Class : Eight 2068 P. M. : 30

[ Physics ]

1.What is derived unit ? The unit of density is called derived unit, why ?[ 1 ]

2.What is measurement ? Write the S. I. unit of the following physical measurements.[ 3 ]

i)Massii)Temperatureiii)Pressureiv)Current

3.How do you find the volume of regular and irregular body? [ 2 ]

4.Define speed and velocity.[ 1 ]

5.Prove that:v2 = u2 + 2as[ 2 ]

6.Define efficiency. Why the efficiency of any machine is not equal to 100% ?[ 2 ]

7.What is a simple machine? Give the principle of simple machine.[ 2 ]

8.Define MA and VR of a simple machine. Show the relation between MA, VR and n.[ 3 ]

9.What is atmospheric pressure and liquid pressure ?[ 1 ]

10.What is barometer and pressure gauge?[ 1 ]

11.Define pressure. Prove that P= dgh.[ 2 ]

12.Give reasons:[ 5 ]

a)It is easier to cut things by using sharp instruments than with blunt one.

b)Football players have studs under their boots.

c)Velocity is a vector quantity.

d)Winding roads are made on hills.

e)Value of MA in third class lever is always less than one.

13.Differentiate between:[ 6 ]

a)Vector and scalar quantities.

b)Force and pressure.

c)First class and third class lever.

14.Solve:

a)Convert one mean solar day into seconds.[ 1 ]

b)A stone is dropped from a certain height with a velocity of 72 km/hr. Find the height from which it was dropped and the time taken to reach the ground. [ 2.5 ]

c)A load of 400 N is lifted by using a block and tackle of 3 pulleys. If 150N effort is required to lift the load, What is its efficiency? [ 3 ]

d)The pressure exerted by a liquid column of depth 0.5m on the base of its container is 5000N/m2.find the density of the liquid. [ 2 ]

15.Study the figure and answer the following questions.

a)What does the figure shows? [ 1 ]

b)What may be the reason of passing out water in the maximum force though the hole ‘C’. [ 1 ]

[ Chemistry ]

16.Write down two differences between atom and molecules. Draw the atomic structure of oxygen. [ 3 ]

17.What is atomic weight ? Name the element shown below & calculate its atomic weight.[ 2 ]

18.What is 2n2 rule? Explain with any 2 examples.[ 2 ]

19.Define group and period.[ 1 ]

20.Chlorine is called reactive element. Why ? [ 1 ]

21.State modern periodic law.[ 1 ]

22.Elements of group IA are called as alkali metals. Why?[ 2 ]

23.Draw the atomic structure of chlorine and magnesium.[ 3 ]

24.a)Identify A and B from the following figure.[ 1 ]

A B

b)Which compound formed when it reacts.[ 1 ]

[ Biology ]

25.What are cell membrane ? Write any two function of nucleus.[ 2 ]

26.Differentiate between animal and plant cell.[ 2 ]

27.Define plastids. How many types of plastids are there and write their function also.[ 3 ]

28.Mitochondria is called as the power of cell why ?[ 1. 5 ]

29.Cells are consider as structural and functional unit of life. Why ?[ 1.5 ]

30.Study the figure.

a)Write the name of A, B, C, D.[ 1 ]

b)Write the function of A and C.[ 1 ]

31.Draw a well label diagram of animal cell.[ 3 ]

PRAGATI ADARSH ENGLISH SCHOOL

Subject: English First Term. Examination F. M. : 70

Class: Eight 2068 P. M. : 28

1.Fill in the bank spaces with the correct word given in the brackets.[ 4 ]

a)Who is ...... best teacher of your school ? ( a, an, the )

b)I went to school yesterday ...... bus. ( on, in by )

c)Ram is good ...... mathematics. ( in, at, for )

d)He ...... play football when he was twenty. ( was used to, used to, using to, use to )

2.Change the following sentences as directed.[ 6 ]

a)She teaches us English. ( Into yes / no question )

b)I am good at games ...... ? ( Tag question )

c)Nobody has made any mistake. ( into affirmative )

d)I said to him, " Do you play hockey ? " ( into reported speech )

e)Somebody has broken the window. ( into passive voice )

f)The name of the girl is Sita. ( into what question )

3.Answer the following questions in your own words. ( Any five )[ 10 ]

a)What is the full form of L. W. F. ? ( The start of the adventure )

b)What warnings did Daedalus give to Icarus ? ( The story of Icarus )

c)When has Chitwan been a sanctuary for rhinos ? ( Animal in Chitwan )

d)What four things which Marco Polo saw in China amazed him ? (A traveler and a Conqueror )

e)When does the walk round the city take place ? ( In Janakpur )

f)Who was Ellen ? ( Ellen's Mountain )

4.Tick the correct answer.[ 5 ]

a)Many children enjoyed ( them self, themselves )

b)You will ( lose, loose ) your money if you carry it in your hand.

c)I told him what he wanted to know. The underlined word ( interrogative pronoun, relative pronoun, relative adverb ).

d)The antonym of ' greedy ' is not ( spend thrift, miser )

e)The plural form of belief is ( beliefs, believes, belives )

5.Punctuate the following text.[ 4 ]

Oh look at all those spotted dear said shambhu aren't they beautiful. there re about twenty I think.

6.Use any four of the following words and phrases in sensible sentences of your own.[ 6 ]

favourite, illiterate, take off, luggage, excited

7.Read the passage carefully and do the activities that follow.

One morning Mr. Smith woke up suddenly. A loud noise had awakened him. He climbed out of bed and went to the window. He could see nothing out side because it was dark, so he went to the door, opened it and quietly walked along the passage to the top of the stairs. There was another loud noise. This time Mr. Smith could hear that it came from downstairs. He went down the stairs quickly and walked towards the kitchen door, which was closed. Bang ! Mr. Smith stopped. The noise had come from inside the kitchen. Very quietly he opened the door and looked inside. The room was in Darkness, so he felt for the electric light switch, which was just inside the door on the wall. He found the switch and turned it on. In the middle of the room he saw his cat, it's head was stuck inside a milk jug and it was trying to get it free. Mr. Smith smiled as he pulled the jug off the cat's head. Now the noises were explained.

A.Find opposite words of the following from the passage.[ 3 ]

quiet, bottom, upstairs, brightness, slowly, pushed

B.Write ' True ' or ' False '.[ 2 ]

i)A loud noise had awakened Mr. Smith.

ii)The noise had come from the bathroom.

iii)In the corner he saw his cat.

iv)Cat's head was stuck inside a milk jug.

C.Answer the following questions.[ 4 ]

i)Where did the second loud noise come from ?

ii)Where did he see his cat ?

iii)What was the cat doing ?

IV)What suddenly awakened Mr. Smith ?

8.Write a letter to your friend describing him / her about the “Science Exhibition” of

your school.[ 10 ]

9.Write an essay on any one of the following topics in about 150 words.[ 10 ]

a)Your village or townb)Disciplinec)Student life

10.Write a paragraph on the basis of given clues.[ 6 ]

BICYCLE

means of transportation - cheap - kind : ordinary, sports, mountain, structure - functions of different parts - importance.

PRAGATI ADARSH ENGLISH SCHOOL

Subject: C. Math First Term. Examination F. M. : 100

Class: Eight 2068 P. M. : 40

Group ‘ A ‘ ( 18 x 2 = 36 )

1.a)Find the quantity whose 25% is Rs.23.

b)Find the value of 47.5% of 1300m.

2.a) Find the simple interest of Rs.51,500 in 3 years at the rate of 5% p.a.

b)3p2qr + 4pq2r – 2pqr2 – pqr from 5pq2r – 4p2qr + 3pqr2 – 5pqr

3.a)( 6p + 7q ) ( 6p – 7q )

b)4a2 – 12ab + 9b2

4.a)A shopkeeper makes a profit of Rs. 42,70,00,00,00,000. Write it in scientific notation.

b)2 X 105

5.a)Simplify : 4p-4q-3÷2p2q5

b)Divide : (2a4-4a3+6a2)÷2a2

6.a)Multiply:( 4x – 5y ) ( 5x + 2y )

b)Simplify:4x2 + 3x ( x + 4 ) - 7x2 + 3

7.a) 5 2 cm.

14 cm. x cm.

b)

9.3 cm. 6 cm.

8.a) 4 cm.

8 cm.

5 cm. 3 cm.

b)

5 cm.

9.a)Find the diameter of the circle whose area is 616 cm2.

b)Find the circumference of the wheel whose radius is 4.2cm. how far will it move in 20 revolutions.

Group ‘ B ‘ [ 16 x 4 = 64 ]

10. The population of a city in 2063 B.S was 42,000. If its annual growth rate is 2%, what would be the population of that city in 2064 B.S.

11.The price of petrol increased from Rs. 90 per liter to Rs. 100 per liter. What percentage did the price of petrol increase?

12.How much money should be lent to receive Rs. 3,400 as an interest at the rate of 8% p.a, in two years?

13. If a sum of money amounts to Rs.1,800 to Rs.2,286 in 6 years, what sum will amount to Rs.4,130 in 4 years at the same rate of interest?

14.Find the products of : (a+b-c) (3a-4b+3c)

15.Simplify: