International Maths Olympiad Forum By SOF Olympiad Trainer - Page 412

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6
A

Ans 2:

Class : Class 9

Ans 3:

Class : Class 6
even i tried it from right not left

Ans 4:

Class : Class 6
a

Ans 5:

Class : Class 9
(A)

Ans 6:

Class : Class 5
omg it was terrefic

Ans 7:

Class : Class 5
This was a real brain teaser. I tried it from the right side but not from the left

Ans 8:

Class : Class 5
I also checked it on the right side but I have to check it from the left side.

Ans 9:

Class : Class 6
Answer= (A)

Ans 10:

Class : Class 5
A

Ans 11:

Class : Class 5
Very easy

Ans 12:

Class : Class 5
Answer = A

Ans 13:

Class : Class 5

Ans 14:

Class : Class 9
(A)

Ans 15:

Class : Class 5
(A)

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 5
C LET NO. OF RED MARBLES = X NO. OF GREEN MARBLES = 5X 5X + X = 1230 X = 205 GREEN MARBLES = 205 X 5 = 1025 Green Marbles removed = 1/5 x 1025 = 205 Left green = 1025 - 205 = 820

Ans 2:

Class : Class 5
Thank you .

Ans 3:

Class : Class 5
vah yar

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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 8
B

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Subject :IMO    Class : Class 3

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 8
B: 2, Given number

Ans 2:

Class : Class 8
Your thinking is right, but we generally use to say that there are 2 factors of a number. So option B is right

Ans 3:

Class : Class 9
suppose the given number is 1 then factor is only 1therefore answer is A:1,given number

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 7

Ans 2:

Class : Class 8

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 7

Ans 2:

Class : Class 6

Ans 3:

Class : Class 9

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 5

Ans 2:

Class : Class 3
I understood my mistake. All lines that can be drewn with a ruler

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 8

Ans 3:

Class : Class 7

Ans 4:

Class : Class 5
(A)

Ans 5:

Class : Class 9
(A)

Ans 6:

Class : Class 8
ACCORDING TO ME THE CORRECT SHOULD BE OPTION - C

Ans 7:

Class : Class 5
A option is correct because 1/5 means 1 divided by 5 = 0.2

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
The answer is option b. 14 - 1,2,7,14. 18 - 1,2,3,6,9,18. 16 - 1,2,4,8,16.

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6
The answer is option D

Ans 4:

Class : Class 6
AnsB) 14- 1,2,7 and 14

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