International Maths Olympiad Forum By SOF Olympiad Trainer - Page 712

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Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7
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Subject :IMO    Class : Class 6

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 6
Even I could see only 2 lines of symmetry. I doubt if the answer is right. It should be 2

Ans 2:

Class : Class 5
We can divide the figure into 2 equal parts in 4 ways

Subject :IMO    Class : Class 4

Ans 1:

Class : Class 10
Thank you for pointing out the mistake. We have corrected the sequence now.
Water in the jug = 1/12
Water added in the jug = 5/6
Total water = 1/2 + 5/6 = 11/12
Water overflowed = 1/4
Capacity of jug = 11/12 - 1/4 = 8/12 = 2/3 L

Ans 2:

Class : Class 10
Thanks for the solution

Ans 3:

Class : Class 6
thanks for the answer

Subject :IMO    Class : Class 4

Class : Class 4
It's A only

Ans 2:

Class : Class 5
Answer: 1, Because smallest 5 digit odd number is 10001. Therefore difference between thousandth place digit and ones place digit is 1-0=1. Answer: (C)

Ans 3:

Class : Class 6
oh thanks by mistake instead of 10003 i thought 11113

Ans 4:

Class : Class 7
The 2nd smallest odd 5 digit number is 10003. So difference between the ones place and thousands is 3-0=3. Ans. 3. which is option A

Subject :IMO    Class : Class 4

Class : Class 9
[D] 1000g

Ans 2:

Class : Class 5
The figure is not clear on right hand side it is actually 800+500+500= 1800 kg left side = 9 balls so 1 ball weight is 1800 /9 = 200 kg 5 balls = 1000 kg answer D

Ans 3:

Class : Class 10

Solution
The weight of 9 balls = 500 + 500 + 800 = 1800 g
Weight of 1 ball = 200 g
Weight of 5 balls = 1000g
PS: The figure may not be clear. We are replacing it with a more clear figure.

Ans 4:

Class : Class 5
figure at the top was not clear it should be clear so that students can gain marks in a justified way