International Maths Olympiad Forum By SOF Olympiad Trainer - Page 378

# User Forum Subject :IMO    Class : Class 4

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Subject :IMO    Class : Class 3

Class : Class 5

Class : Class 3
bit confuseing

Class : Class 3

Class : Class 5

Class : Class 3

## Ans 6:

Class : Class 3
bit confuseing

Subject :IMO    Class : Class 7

Class : Class 8

Class : Class 10

## Ans 3:

Class : Class 9

Subject :IMO    Class : Class 9

Class : Class 10

## Ans 2:

Class : Class 9
Solve- In 1st figure, 6^3+4^3+3^3+2^3=315 ​ In 2nd figure, 11^3+8^3+7^3+6^3=2402 Similarly, in 3rd figure, 5^3+4^3+1^3+x^3=1190 = 190+x^3=1190 = x^3=1000 = x=10 So, correct answer is D) 10

Class : Class 9

## Ans 4:

Class : Class 10
how

Subject :IMO    Class : Class 4

Class : Class 4

## Ans 2:

Class : Class 4

Subject :IMO    Class : Class 4

## Ans 1:

Class : Class 4

Subject :IMO    Class : Class 6

Class : Class 9
WHY

## Ans 2:

Class : Class 7
Could I have some sort of explanation as to why? The question really isn't clear

## Ans 3:

Class : Class 8
So damn confusing

## Ans 4:

Class : Class 8
Not explained the solution properly , please correct

Class : Class 7

Class : Class 7
WTF

Class : Class 8

## Ans 8:

Class : Class 6

Subject :IMO    Class : Class 5

## Ans 1:

Class : Class 6
Ans D is correct, not wrong because 2, 4, 8, 10, 12, 14, 16, 18, 22, 24, 28 and 30 are working days of guitar classes. 6 and 20 are not working days because these days are sundays and 26 is not a working day because it is a fourth saturday and even sundays and fourth saturday are not working days.

Class : Class 7

Class : Class 5
ans is d

## Ans 4:

Class : Class 7
Total number of days Sneha goes for guitar classes = 12â´ Number of days she does not go for guitar classes = 31 - 12 = 19

## Ans 5:

Class : Class 5

Subject :IMO    Class : Class 2

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Subject :IMO    Class : Class 5

## Ans 1:

Class : Class 10
Area of rectangle ABCD = (18 × 8) cm2 = 144 cm2 total area = (144 72) cm2 = 216 cm2

## Ans 2:

Class : Class 6
Bala Bala Shaitan Ka Saala

## Ans 3:

Class : Class 6
Answer is b because the length of the bigger rectangle is 18 cm and breadth is 8 cm. The length of the smaller rectangle is 30 cm-18 cm=12 cm and breadth is 8 cm-2 cm=6 cm. The area of the bigger rectangle is 18 cm X 8 cm=144 sq. cm and the area area of the smaller rectangle is 12 cm X 6 cm=72 sq. cm. Area of the figure given is 144 sq. cm+72 sq. cm=216 sq. cm.