International Maths Olympiad Forum By SOF Olympiad Trainer - Page 763

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6
Admin is wrong. To make a piece of paper into 2 pieces, we need only 1 cut and to make a piece of paper into 2 equal pieces the time taken is 6 seconds which is the time taken for 1 cut. So, the number of cuts for making a paper into 10 equal pieces will be 9, so, the time taken for making a paper into 10 equal pieces will be 9 X 6 seconds=54 seconds.

Ans 2:

Class : Class 6
It is an error.

Ans 3: (Master Answer)

Class : Class 1
The correct answer is D.

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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 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 9

Ans 3:

Class : Class 4
(C) 32 hours 30 minutes

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Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

Ans 2:

Class : Class 8

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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 3

Ans 1:

Class : Class 2
c is the answer explanation:3/2 of what Swati eats is equal to 21 so Swati eats 14

Ans 2:

Class : Class 3
c 14

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Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

Ans 2:

Class : Class 9

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 6

Ans 2: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4
haa. god knows .

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7
A and B are supplementary angles(linear pair). So a+b=180. If we solve this equation, x+2+2x+4=180, we get A is 60.

Ans 2:

Class : Class 7
Ans is B 60Degree

Ans 3:

Class : Class 8
The correct answer indeed is B

Ans 4:

Class : Class 7
60 degree

Ans 5:

Class : Class 9
ANGLE A +ANGLE B=180 DEGREE X+2+2X+4=180 DEGREE 3X+6=180 3X=180-6 3X=174 X=174/3 X=58 ANGLE A=X+2 =58+2 =60 DEGREE

Ans 6:

Class : Class 9
You see that

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