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MATHSMATHS

Dr. T.K. Jain.Dr. T.K. Jain.

AFTERSCHOOOLAFTERSCHOOOLwww.afterschool.tkwww.afterschool.tk

www.afterschoool.tkwww.afterschoool.tk

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In an election between two

candidates, the candidateswho gets 30% of the votespolled is defeated by 15000

votes. The number of votessecured by the winning

candidate? 70/40 (15000) = 26250 votes.

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When water freezes into

ice it increased by 9% involume. How many percentwill the volume of ice

decrease if it is melted intowater?

8.26 % approx.

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Log 464 ?

3 is the answer.

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Log 10.01 ?

-2 ans.

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Circumference of a circle

is 131.9 what is its area?

1385.4 or 441 pie approx.

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Area o a circ e is sq.cm. what is its

circumference? 175.9 approx.

Or 56 pie

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How many balls of diameter1 cm each can be made from

a sphere of diameter 16cm?

4096

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Match the following: Orthocentre Circumcentre

Incentre Centroid

Altitudes

Medians

Perpendicularbisectors

Angular bisectors

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In a triangle ABC, A is of70 degree, bisectors of B

and C meet at point O, whatis the measurement of

angle BOC?

90+.5(70) = 125 degree.

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In a triangle ABC, A is of 70degree, Side AB and AC are

extended to P and Qrespectively. Bisectors of

PBC and QCB meet at pointO, what is the measurementof angle BOC?

90 - .5(70) = 90-35 = 55 degree ans.

T ti ii t

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T e ratio o ra ii o twocircles is 1:3, what is the

ratio of their area?

1:9

i t

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. o a num er is equa to.07 of another. What is the

ratio of the two numbers?

7:50 Ans.

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4A=5B=7C, and we divideRs. 581 among A,B,C, how

much will they get (eachseparately)?

A gets 245, B 196 and C 140 ans.

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A bag contains 1 rupee 50paise, 25 paise coins in the

ratio 5:6:7, and totalamount is Rs 390, find the

number of these coins?

1 rupee coin = 200, 50 paise coins =240 and 25 paise coins = 280.

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Three numbers are in ratio2:3:5,sum of their squares

is 608, what are thenumbers?

The numbers are 8,12 and 20.

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What is the square root

of .4?

.632 approx.

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What is the square root

of .9?

.9 approx.

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Five bells toll together atand then they bell an an

interval of 6,7,8,9,12seconds respectively. How

many times will the tolltogether in one hour? Calculate LCM of 6,7,8,9, 12 = 504 Divide 3600 by 504 = 7 approx. so they will

toll together 7 times in an hour.

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What is the greatest no.that will divide 290,460 and552 and leave remainder of

4,5,6 respectively?

Calculate HCF of 286,455 and 546(deduct remainers) = 13 ans.

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Thanks

Afterschoool conducts three year integratedPGPSE (after class 12 along with CA & CS)and 18 month PGPSE (Post GraduateProgramme in Social Entrepreneurship) alongwith preparation for CFP / CFA /CMA / FRM.It also conducts workshops on social

entrepreneurship in schools and colleges allover India start social entrepreneurshipclub in your institution today with the helpfrom afterschoool and help us in developing

society.

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