International Maths Olympiad Forum By SOF Olympiad Trainer

# User Forum

Subject :IMO    Class : Class 5

## Ans 1:

Class : Class 6
640 you idiot

Subject :IMO    Class : Class 7

## Ans 1:

Class : Class 6

Subject :IMO    Class : Class 7

Class : Class 7

## Ans 2:

Class : Class 7
In question the phrase 'is added to itself' should be ommited. Then the answer matches with the question

## Ans 3:

Class : Class 7
Can you please explain how we get this answer

Subject :IMO    Class : Class 10

## Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

Subject :IMO    Class : Class 10

## Ans 1:

Class : Class 10
answer is 215 as all others are multiples of 13 247=13*19 91=13*7 65=13*5

Subject :IMO    Class : Class 8

## Ans 1:

Class : Class 4
from where the 12 come?

Class : Class 8

## Ans 3:

Class : Class 8

Subject :IMO    Class : Class 7

## Ans 1: (Master Answer)

Class : Class 1
860% of 50= (860/100)x50 and 50% of 860 is (50/100)x860

Subject :IMO    Class : Class 8

Class : Class 8

## Ans 2:

Class : Class 9
answer is coming as B in site

Class : Class 8
6

## Ans 4:

Class : Class 10

Solution
Work done by A in 1 day = 1/9
Work done by B in 1 day = 1/9 + 50% of 1/9 = 3/18 = 1/6
Days needed by B to complete the work = 6 days

Subject :IMO    Class : Class 4

## Ans 1:

Class : Class 4
It should be 5. 3 removed from center triangle and 2 joining the top of the 3 triangle on the bottom there remains 4 triangles : 3 on the bottom and 1 outer triangle

## Ans 2: (Master Answer)

Class : Class 1
The correct answer is D.

Subject :IMO    Class : Class 8

## Ans 1:

Class : Class 8
(D) one angle is 90 degree

## Ans 2:

Class : Class 10
Answer : Diagonals are equal. Corrected option B to say "Diagonals are equal"

## Ans 3:

Class : Class 7
both the options c and d are correct

## Ans 4:

Class : Class 10
Answer : Diagonals are equal. Corrected option B to say "Diagonals are equal"

## Ans 5:

Class : Class 9
ANS:DIAGONALS ARE EQUAL