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