International Maths Olympiad Forum By SOF Olympiad Trainer

# User Forum

Subject :IMO    Class : Class 3

## Ans 1:

Class : Class 4
answer is D. 8 triangles in rectangle and 6 triangles in big triangle. 4 triangles in right, 1 is straight on big triangle and two in coloured rectangle. so, 8+6+4+1+2=21

Class : Class 3

Class : Class 3
c

Class : Class 5

Class : Class 8
[C]20

## Ans 6:

Class : Class 6
20 is the correct answer

Class : Class 3

## Ans 8:

Class : Class 3
c c c c c c c c c c c c c c c c c c c c c c c c c c c cc c c cc c c c c c c c c c c c c c c c c c c c c c c c c

Class : Class 3
20

## Ans 10:

Class : Class 4

Subject :IMO    Class : Class 6

Class : Class 6
B) 7 , 5

## Ans 2:

Class : Class 7
355*55=1775 17750=19525, the x must be equal to y so we get x=y=5

Subject :IMO    Class : Class 6

## Ans 1:

Class : Class 6

Subject :IMO    Class : Class 4

## Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

Subject :IMO    Class : Class 4

## Ans 1:

Class : Class 5
ans is C CCCXVI IS 316 N CCVII IS 207

## Ans 2:

Class : Class 10
Dolly's Time: Roman-> CCVII, Decimal-> 207 Dravid's Time: Roman-> CCCXVI, Decimal-> 316 Difference: 316 - 207= 109, or Roman-> CIX Option (C)

Subject :IMO    Class : Class 4

Class : Class 4
576 cm (B)

Class : Class 7
OK

Class : Class 4
B

Class : Class 1

## Ans 5:

Class : Class 10
Length of extra rope was 1/5 of the length of room, 480*1/5=96. Therefore total length of rope is, 480 + 96 = 576 Option (B)

Subject :IMO    Class : Class 5

Class : Class 5
11 is the answer

## Ans 2:

Class : Class 6
answer is option A as the numbers are 156,516,174,714,456,546,654,564

Subject :IMO    Class : Class 4

Class : Class 4
b

Class : Class 4
c

## Ans 3:

Class : Class 7
The correct answer is 'B'. As you have been asked - 84 thousands 60 hundreds 50 tens = 90,150 16 thousands 82 hundreds 28 tens 19 ones = 24,499 Now over here we have not been given an equation symbol. So, we assume that 90,150 - 24,999 = 65,651 Therefore the answer is 'B: 65,651'

## Ans 4:

Class : Class 7
Check, has been corrected. The equation symbol has been placed -

## Ans 5:

Class : Class 10
There was a minus sign in between which was missing. It has been corrected.
First Number = 84000+6000+150 = 90150
Second Number = 16000+ 8200 + 280 + 19 = 24499
Difference = 90150 - 24499 = 65651

Subject :IMO    Class : Class 6

## Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.