International Maths Olympiad Forum By SOF Olympiad Trainer - Page 574

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7
50 cm =1/2 x10 x5

Ans 2:

Class : Class 7
25

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3
A

Ans 2:

Class : Class 3
A because we have to multiply

Ans 3:

Class : Class 3

Ans 4:

Class : Class 8
A

Ans 5:

Class : Class 3
A

Ans 6:

Class : Class 3
a

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 5

Ans 3:

Class : Class 5

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3
30

Ans 2:

Class : Class 3
30

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3
15

Ans 2:

Class : Class 5

Ans 3:

Class : Class 7
14

Ans 4:

Class : Class 6
It should be 15 because numbers are2,12,20,21,22,23,24,25,26,27,28,29,32,42.

Ans 5:

Class : Class 9
The answer is b,14 because between 1 to10 1 time, 11 to 20 2 times, 21 to 30 9 times , 30 to 40 1 time, 41 to 50 1 time. Now if we add all of them we get 14. So the answer is 14.

Ans 6:

Class : Class 4
it has to be 15, 2 is repeated in 22

Ans 7:

Class : Class 3
please give detailed decsription of the answer for this question above.

Ans 8:

Class : Class 4
The correct answer is 15,as 22 contains 2 times 2

Ans 9:

Class : Class 3
j,bhkn,.j.jk,jj.kjmjkjkjkjk

Ans 10:

Class : Class 5
the answer should 14 because as the numbers would be -2 12 21 22 23 24 25 26 27 28 32 42 -14 0nly because it cannot go after 50

Ans 11:

Class : Class 4
should be 14

Ans 12:

Class :
36

Ans 13:

Class : Class 3
hey raghav

Ans 14:

Class : Class 3
I am also getting 14 but I did wrong😠😠😠👹👹👹👹👹

Ans 15:

Class : Class 3
It should be 14. Not 15. As the numbers would be-2,12,20,21,22,23,24,25,26,27,28,29,32,42.

Ans 16:

Class : Class 5
14 is the answer

Ans 17:

Class : Class 9
14

Ans 18:

Class : Class 3
its 15!

Ans 19:

Class : Class 4
14

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3
The picture of thermometer is blur.

Ans 2:

Class : Class 9
The answer is a because it is 60 and not c. C is 59.

Ans 3:

Class : Class 9
A

Ans 4:

Class : Class 9
A

Ans 5:

Class : Class 3

Ans 6:

Class : Class 3
Remove this question. The images are not clear and just confusing!! It doesn't test anything.

Ans 7:

Class : Class 3
C is the correct answer

Ans 8:

Class : Class 5
c

Ans 9:

Class : Class 5
correct answer is a

Ans 10:

Class : Class 9
The answer is a as a is 60 and not c. C is 59 so it cannot be the answer. Please change the answer which you have written in correct answer.

Ans 11:

Class : Class 4
C

Ans 12:

Class : Class 3
c

Ans 13:

Class : Class 5

Ans 14:

Class : Class 4
The picture is so unclear. Question is not fair. I marked A (60) because the question showed the temperature as between 78 and 79.

Ans 15:

Class : Class 3
C

Ans 16:

Class : Class 4

Ans 17:

Class : Class 4

Ans 18:

Class : Class 5
c

Ans 19:

Class : Class 4
The question was so unclear.

Ans 20:

Class : Class 8
a

Ans 21:

Class : Class 4
THE IMAGE SHOWS THE TEMPERATURE AS 78.5 .. THE IMAGE IS NOT CLEAR.. QUESTION IS IN C NOT F.. ANSWER GIVEN IN SOLUTION IS IN F.. OPTIONS ARE ALSO MISTAKEN

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 7
Ans is 4

Ans 2:

Class : Class 7
4 is correct answer

Ans 3:

Class : Class 3
The answer is 4 but they said the value of Q is dash less than 10.

Ans 4:

Class : Class 3
answer is 4

Ans 5:

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

Ans 6:

Class : Class 4
The correct answer is 4

Ans 7:

Class : Class 4

Ans 8:

Class : Class 3

Ans 9:

Class : Class 4
Answer is 4 because when multiple with 23 by 14 we 322

Ans 10:

Class : Class 3
But its answer is 4

Ans 11:

Class : Class 3
correct answer is 4

Ans 12:

Class : Class 8
answer is 4

Ans 13:

Class : Class 8
yes answer is 4 from Mokshada sikachi

Ans 14:

Class : Class 4
Answer is 4

Ans 15:

Class : Class 5
CORRECT Answer is 4

Ans 16:

Class : Class 6
correct answer is 4

Ans 17:

Class : Class 7

Ans 18:

Class : Class 4
answer is 4

Ans 19:

Class : Class 4
Geet modi is a genius

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Subject :IMO    Class : Class 4

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Subject :IMO    Class : Class 5

Ans 1:

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.

Ans 2:

Class : Class 5
Ans is not B. Ten thousand is 5 digits place. Answer Should be C. B should be wrong. If they asked for rounding off to Lakhs place, then B is correct.

Ans 3:

Class : Class 5
They are asking to round off the final sum, not round off the individual numbers and add. First sum, then round off the sum to nearest ten thousand. So the last 5 digits should be 99000 which is Option C.

Ans 4:

Class : Class 6
Option B)

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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 8
The answer is 4, not 3

Ans 2:

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

Ans 3:

Class : Class 9
the answer is 4!!!

Ans 4:

Class : Class 8
the answer is 7.

Ans 5:

Class : Class 5
ans is 7

Ans 6:

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 7:

Class : Class 8
The answer should be option (A) = 4. There are 4 prime factors, i.e. 2, 3, 5 and 7. The solution contradicts the question's answer.

Ans 8:

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

Ans 9:

Class : Class 9

Ans 10:

Class : Class 9
4

Ans 11:

Class : Class 9
The answer should be (A) 4.There are four factors, i.e. 2,3,5,7. Even the solution says so. Please correct the error.

Ans 12:

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

Ans 13:

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

Ans 14:

Class : Class 9
ans is 4. (2,3,5,7)

Ans 15:

Class : Class 8

Ans 16:

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 17:

Class : Class 7

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