International Maths Olympiad Forum By SOF Olympiad Trainer - Page 426

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 7

Ans 2:

Class : Class 6

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 9

Ans 2:

Class : Class 10
No answer is 2000 sorry

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 5
option third is right

Ans 2:

Class : Class 7
its C. as 1/2 x 22/7 x 196 - 22/7 x 49 = 154 cm2

Ans 3:

Class : Class 8
C is correct

Ans 4:

Class : Class 8

Ans 5:

Class : Class 8
c is correct308-154=154 you have done this308 154=462hence option c is correct

Ans 6:

Class : Class 8

Ans 7:

Class : Class 8
c is correct

Ans 8:

Class : Class 8
Here the given answer option D is wrong . The correct answer is option C.

Ans 9:

Class : Class 8

Ans 10:

Class : Class 8
I think C is the correct answer... 154

Ans 11:

Class : Class 8
Answer is (C)Diameter of bigger circle=28 cmradius=28/2=14 cmArea of semicircle=1/2*22/7*14*14=4312/14=308 sq.cm2 semicircle=circleArea=22/7*7*7=1078/7=154 sq.cmArea left=308-154=154 cm

Ans 12:

Class : Class 8
C for corecct

Ans 13:

Class : Class 7
Option C is correct ,as , area of big semi circle = 14 * 14 * 22/(7*2) = 14 * 22 = 308 then we will subtract the area of unshaded 2 semi circle(which is a whole circle ), = 7 * 7 * 22/7 = 7*22 = 154 ,Hence , area of shaded portion is , = area of big semi circle - are of two small semi circle = 308 - 154 = 154 sq. cm

Ans 14:

Class : Class 10
Option C is the answer

Ans 15:

Class : Class 7
C is the correct answer.

Ans 16:

Class : Class 9

Ans 17:

Class : Class 9
c is correct

Ans 18:

Class : Class 9
C is correct

Ans 19:

Class : Class 10

Ans 20:

Class : Class 6

Ans 21:

Class : Class 8

Ans 22:

Class : Class 8
Yes , i agree ...Option c is the ans.

Ans 23:

Class : Class 4
option C,154 is correct answer

Ans 24:

Class : Class 8
c is correct

Ans 25:

Class : Class 8
c is correct

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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 9
√3844=62 Hence the answer is c

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7
let the price of object B be x the the price of object A is (6x-100) now ATP, 1(6x-100) + 4*x=1400 =>6x-100 + 4x=1400 =>10x -100=1400 =>10x=1500 =>x=1500/10 =>x=150 now the price of object A=150*6-100 =800(d)

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Subject :IMO    Class : Class 10

Ans 1:

Class : Class 7
IT IS D BECAUSE 3abc IS equal to A CUBE+B CUBE+C CUBE

Ans 2:

Class : Class 10
Answer is 3abc cause'. Centroid in coordinate geometry is equal tO X1+X2+X3/2 , Y1+Y2+Y3/2 THEREFORE 0 EQUAL TO X CORDINATE ANT SO A+B+C EQUAL TO ZERO

Ans 3:

Class : Class 10
D

Ans 4:

Class : Class 10
D Because a+b+c=0 And, a3+b3+c3=3abc

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Subject :IMO    Class : Class 10

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
Please correct the question

Ans 3:

Class : Class 4
the values in the answers are all wrong

Ans 4:

Class : Class 4
please rectify the question

Ans 5:

Class : Class 4
Please correct the question. The question should be " Find the value of the star, smiley

Ans 6:

Class : Class 6
Please correct the question , Find the value of star, smiley, pentagon respectively.

Ans 7:

Class : Class 6

Ans 8:

Class : Class 7
please check question

Ans 9:

Class : Class 3

Ans 10:

Class : Class 3

Ans 11:

Class : Class 7
Please correct the question. The values to be obtained are not given properly

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 8
69

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 7
None of them. The answer is 1568568567

Ans 2:

Class : Class 7
If *sun means sum ,then how there be a minus symbol??

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