International Maths Olympiad Forum By SOF Olympiad Trainer

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Subject :IMO    Class : Class 1

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :IMO    Class : Class 1

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5
56/3÷8/3 56/3*3/8 56/8 =7

Ans 2:

Class : Class 6
A

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 4
TOUGH FOR CLASS 1

Ans 2:

Class : Class 3
Using Factorial for Class 3 seems difficult. I taught my daughter as under:- Step 1 - Put 7 at thousand place and how many different numbers we can get --She replied 6 Step 2- Put 5 at thousand place and how many different numbers we can get --She replied 6 Step 3 -Put 0 at thousand place , do we get four digit number --She replied NO Ste 4 - Put 2 at thousand place and how many different numbers we can get --She replied 6 Step 5 - Add numbers obtained in above steps we get 18

Ans 3:

Class : Class 3

Ans 4:

Class : Class 3
n!-(n-1)! is the answer. n is number of digits here. (n-1)! is subtracted from n! since there is digit with 0. otherwise it is just n! Now How do you calculate n!. For example 4! here. 4! = 4x3x2x1 = 24 (4-1)! = 3! = 3x2x1 = 6 Hence the answer is n! - (n-1)! = 4! - (4-1)! = 4! - 3! = 24 -6 = 18 Option D is the answer.

Ans 5:

Class : Class 3
(D) 18

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3
c

Ans 2:

Class : Class 3
(C) 7 tables

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 7
D

Ans 2:

Class : Class 6
Rectangle have 2 line of symmetry only so answer should be C

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
The answer is (a) QSPBMFN

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Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 5
If your setup box is tata sky then I think 457

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 6
It is B %100 sure 23+32=53=5.5 Even if it is confusing the answer is B itself.

Ans 2:

Class : Class 4
B

Ans 3:

Class : Class 6
It is B %100 sure 23+32=53=5.5 Even if it is confusing the answer is B itself.

Ans 4:

Class : Class 2
Make the figures as complete fractions, then bring the denominator as the same values and then solve

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