International Maths Olympiad Forum By SOF Olympiad Trainer - Page 678

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
The formula is (L.C.M.*H .C.F.)/1st number.

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4
ans a-80. From 1-9 there are 9 digits . so we are left with 151-9=142 digits. Note that from 10 onwards all numbers are of 2 digits. So there are 142/2=71 numbers to have 142 digits. Therefore there are 9+71=80 numbers.

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4
Answer is C

Ans 2:

Class : Class 8
(364-209) divided by 5=3131*3=93So, the answer is C.

Ans 3:

Class : Class 7
The no is 31.31x5=155 209=364.Hence neither statement 1 nor statement 2 is correct

Ans 4:

Class : Class 4
ans-d

Ans 5:

Class : Class 4

Ans 6:

Class : Class 6
Answer should only and only be D

Ans 7:

Class : Class 6
Ans. 1Soham Mohantyclass-4fAnswer:c

Ans 8:

Class : Class 4
You’re are supposed to multiply the number by 3 hence the answer is C

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 7
The answer is c

Ans 2:

Class : Class 5
C

Ans 3:

Class : Class 9
The ans is C 48

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Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 4
the shapes are not clear

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Subject :IMO    Class : Class 5

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 9
ans =1036844

Ans 2:

Class : Class 9
ans =1036844

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3
3353 is the correct (D)

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Subject :IMO    Class : Class 6

Ans 1: (Master Answer)

Class : Class 1
its {n(n+1)}/2

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