International Maths Olympiad Forum By SOF Olympiad Trainer - Page 355

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3
correct answer is 4

Ans 2:

Class : Class 3
correct answer is 4

Ans 3:

Class : Class 7
CORRECT Answer is 4

Ans 4:

Class : Class 6
Ans is 4

Ans 5:

Class : Class 3
answer is 4

Ans 6:

Class : Class 5
answer is 4

Ans 7:

Class : Class 7
4 is correct answer

Ans 8:

Class : Class 5
yes answer is 4 from Mokshada sikachi

Ans 9:

Class : Class 3
the answer is six because 10-4

Ans 10:

Class : Class 5

Ans 11:

Class : Class 3
But its answer is 4

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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 4
isn't the answer "A"

Ans 2:

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

Ans 3:

Class : Class 8
the answer is 7.

Ans 4:

Class : Class 9
4

Ans 5:

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 6:

Class : Class 8
ans is 7

Ans 7:

Class : Class 7

Ans 8:

Class : Class 9

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

Ans 11:

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

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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
solutions should be in detail and a little easy

Ans 2:

Class : Class 6

Ans 3:

Class : Class 5

Ans 4:

Class : Class 4
The answer is D

Ans 5:

Class : Class 9
The answer is D .

Ans 6:

Class : Class 3

Ans 7:

Class : Class 5
the answer is c

Ans 8:

Class : Class 9
BIR you have written ten thousand instead of one thousand !!!

Ans 9:

Class : Class 5
The answer is D- 1 thousand

Ans 10:

Class : Class 5
dfd

Ans 11:

Class : Class 5
man the answer is 10 lackhs

Ans 12:

Class : Class 6

Ans 13:

Class : Class 2
100 tens = 1 thousand

Ans 14:

Class : Class 4
10000

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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 4
out of syallabus

Ans 2:

Class : Class 4
Out of Syllabus

Ans 3:

Class : Class 5
options given seems to be wrong

Ans 4:

Class : Class 3
correct answer should be 33

Ans 5:

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

Ans 6:

Class : Class 4

Ans 7:

Class : Class 3
the answer should 107

Ans 8:

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 9:

Class : Class 7
IT IS OUT OF SYLLABUS.

Ans 10:

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

Ans 11:

Class : Class 3

Ans 12:

Class : Class 7
the answer is 108

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