International Maths Olympiad Forum By SOF Olympiad Trainer - Page 310

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Subject :IMO    Class : Class 9

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 7

Ans 2:

Class : Class 3
2

Ans 3:

Class : Class 3
how do we solve this?

Ans 4:

Class : Class 6
pls explain solution

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Subject :IMO    Class : Class 9

Ans 1:

Class : Class 9
It is 74 itself. Think of it like this: You have Rs. 9.7 with you and you want to buy as many chocolates as possible. In such a case, you can buy only 4 chocolates, as you are short of Rs. 0.3. Dividing 9.7 by 2 gives 4.85 that can be approximated to 5, which is wrong as 5 chocolates require Rs. 10 (you need Rs. 0.3 more). So, you can use the amount less than or equal to what you have with you.

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5
how

Ans 2: (Master Answer)

Class : Class 1

The correct answer is option B. 


Ans 3:

Class : Class 6
The correct ans is C

Ans 4:

Class : Class 5
Hi

Ans 5:

Class : Class 5

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Subject :IMO    Class : Class 1

Ans 1: (Master Answer)

Class : Class 1

(B): 68 < 70 < 75 < 86
Therefore, doll in option (B) has the minimum cost.


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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 4
1/31/3

Ans 2: (Master Answer)

Class : Class 1

(D): Number of pages Monika read = (1/3) x total number of pages

                                                        = (1/3) x 48 = 16

 


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Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1

(A): We have,
1567.79 × 100 + 634.76 × 100 -? = 110255
⇒ 156779 + 63476 -? = 110255
 ? = 110000
= 1.1 × 100000


Ans 2:

Class : Class 5
We have,1567.79 × 100 634.76 × 100 -? = 110255⇒ 156779 63476 -? = 110255 ? = 110000= 1.1 × 100000

Ans 3:

Class : Class 7

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Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1

(A): Number of students appeared in Hindi exam 
= 50
Number of students appeared in Science exam 
= 40
So, required fraction = 


Ans 2:

Class : Class 6

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
OPTION A

Ans 2:

Class : Class 6
OPTION A

Ans 3:

Class : Class 1
It should be zero if they all are parallel.

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 8

Ans 2:

Class : Class 7

Ans 3:

Class : Class 8
B is the answer

Ans 4:

Class : Class 9
According to me answer should be D

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