International Maths Olympiad Forum By SOF Olympiad Trainer - Page 369

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Subject :IMO    Class : Class 4

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6
Option B)

Ans 2:

Class : Class 6
Ans is B because 3645279+2153467=5798746. 5798746 will be rounded to its nearest ten thousand, which is 5800000, since 98746 will be rounded to nearest ten thousand, which is 100000, 1 will be carried to the lakhs place, or, you can say that 3645279 and 2153467 will be rounded to the nearest ten thousand, which will be 3650000 and 2150000, respectively. 3650000+2150000=5800000.

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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 8
The answer is 4. There are 4 prime factors: 2,3,5 and 7

Ans 2:

Class : Class 6
the solution of the equation is 3*3*5*5*5*2*7 which has seven prime factors

Ans 3:

Class : Class 8
the answer is 7.

Ans 4:

Class : Class 7

Ans 5:

Class : Class 8
ans is 7

Ans 6:

Class : Class 9

Ans 7:

Class : Class 9
4

Ans 8:

Class : Class 8
Yes .... The answer is 4. ( 2, 3 ,5 and 7)

Ans 9:

Class : Class 8
The answer is 3. When you solve the equation you get 3*3*1*1*2*14/1*1*1. Now we see that the prime numbers left are 3,3 and 2. Therefore there are 3 prime numbers.

Ans 10:

Class : Class 4
isn't the answer "A"

Ans 11:

Class : Class 8
The answer is 3. When you solve the equation you get 3*3*1*1*2*14/1*1*1. Now we see that the prime numbers left are 3,3 and 2. Therefore there are 3 prime numbers.

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Subject :IMO    Class : Class 3

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Subject :IMO    Class : Class 3

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4
10000

Ans 2:

Class : Class 7
BIR you have written ten thousand instead of one thousand !!!

Ans 3:

Class : Class 5
the answer is c

Ans 4:

Class : Class 6

Ans 5:

Class : Class 5
man the answer is 10 lackhs

Ans 6:

Class : Class 2
100 tens = 1 thousand

Ans 7:

Class : Class 5
The answer is D- 1 thousand

Ans 8:

Class : Class 5
dfd

Ans 9:

Class : Class 4
The answer is D

Ans 10:

Class : Class 4
solutions should be in detail and a little easy

Ans 11:

Class : Class 4
trick question

Ans 12:

Class : Class 7
The answer is D .

Ans 13:

Class : Class 6

Ans 14:

Class : Class 3

Ans 15:

Class : Class 5

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Subject :IMO    Class : Class 8

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 9
its more than easy D

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3
the answer should 107

Ans 2:

Class : Class 7
It is NOT out of syllabus . The sulution is that one moon is 18.So,18x18=324.To get the star devide 18 by 3=6.18-6=12

Ans 3:

Class : Class 6
it is a little tricky but i solved it.

Ans 4:

Class : Class 3

Ans 5:

Class : Class 4
out of syallabus

Ans 6:

Class : Class 4

Ans 7:

Class : Class 7
IT IS OUT OF SYLLABUS.

Ans 8:

Class : Class 7
the answer is 108

Ans 9:

Class : Class 5
options given seems to be wrong

Ans 10:

Class : Class 4
Out of Syllabus

Ans 11:

Class : Class 3
I don't know the answer because IT IS OUT OF SYLLABUS

Ans 12:

Class : Class 3
correct answer should be 33

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Subject :IMO    Class : Class 4

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