International Maths Olympiad Forum By SOF Olympiad Trainer

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Subject :IMO    Class : Class 5

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Subject :IMO    Class : Class 6

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Subject :IMO    Class : Class 6

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
c

Ans 2:

Class : Class 7

Ans 3:

Class : Class 6

Ans 4:

Class : Class 7
answer is bwhen we move from left to rightexample-1000 to 100how do you get 100 by dividing it by 10 right?i.e 1000/10 = 100answer = 1/10

Ans 5:

Class : Class 6
the correct answer is [B] because if we take a no. as 10.ok.then i am doing like example see- 10X1/10 so it is =1 so it decreased

Ans 6:

Class : Class 5
correct ans. should be C

Ans 7:

Class : Class 4
I think answer is B.....as we have to divide the digit by number 10 each time we move from left to right .....and so its value decreases eg 500 is divided by 10 (500*1/10 = 50) to make its place value from hundred to tens

Ans 8:

Class : Class 7
c is right because we have to multiply cause we are given times.. 1000x___= 100... so we get 1000/10= 10 so c is right

Ans 9:

Class : Class 6
how can it decrease by 1/10. it changes by 1/10 and decreases by 10 times answer should be C

Ans 10:

Class : Class 8
ans. should be [C].

Ans 11:

Class : Class 6
Ans is (c).

Ans 12:

Class : Class 6
The correct answer is C as 100/10 is 10, 1000/100 is also 10.

Ans 13:

Class : Class 7
The answer is (c)

Ans 14:

Class : Class 6
ans should be c

Ans 15:

Class : Class 6

Ans 16:

Class : Class 6
ans should be C

Ans 17:

Class : Class 6
Ans c only makes sense

Ans 18:

Class : Class 7

Ans 19:

Class : Class 8
it should be B as it is decreased by not increased if it was increased than it was 10

Ans 20:

Class : Class 7
As he is saying times, it should be 10 and not 1/10. So, answer should be C

Ans 21:

Class : Class 7
Answer should be C

Ans 22:

Class : Class 6
The correct answer is (C) because the question asks you by how many times it is DECREASING from LEFT TO RIGHT . If it said increasing, then the answer would be (B)

Ans 23:

Class : Class 6
Ans should be (c)

Ans 24:

Class : Class 6
and should be c

Ans 25:

Class : Class 7
answer should be Cas 100 /10 is 10

Ans 26:

Class : Class 7
decreasing by 1/10 is not possible . the answer should be (c)

Ans 27:

Class : Class 4
Its C

Ans 28:

Class : Class 7
the answer is C.. B is the wrong answer . if we have to move the digits from left to right we should multiply and not divide.. please clarify SOF..

Ans 29:

Class : Class 6
The and should be C

Ans 30:

Class : Class 6
The answer is c. It decreases by 1 by 10 when it goes from right to left, not from left to right.

Ans 31:

Class : Class 7
correct ans. should be C

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4
The answer is B but if anyone has doubt , please call 9243729047 . I will explain it briefly to you .

Ans 2:

Class : Class 4
thank you

Ans 3:

Class : Class 4
b

Ans 4:

Class : Class 7
hey , it is 90 tenths cause tenths means at the tenths place only . But if if there is another no. like 90 tenths we should multiply . But if you choose hundredth tenths it it will become in thousands value.

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Subject :IMO    Class : Class 5

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Subject :IMO    Class : Class 3

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 6
If the movie is for 2 hours it can be shown 6 times between 12 noon and 12 midnight which is 12 hours. 12/2=6. The answer is B.

Ans 2:

Class : Class 4
Ok

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Subject :IMO    Class : Class 7

Which of the following options hold?
I. Two triangles are congruent to each other if their corresponding angles and corresponding sides are euqal.
II. If two angles and the included side of one triangle are equal to two corresponding angles and the included side of another triangle, then the two triangles are congruent to each other.
III. If three angles of a triangle are equal to three corresponding angles of another triangle, then the triangles are called congruent.

AI and II are true, III is false
BI and III are true, II is false
Conly I is true
DAll of these are true.


all are conditions of congruence by definition

Ans 1:

Class : Class 7
Why III is false?

Ans 2: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 3:

Class : Class 7
III is false because AAA is no property

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 8
Please Someone explain

Ans 2:

Class : Class 7
I agree with Ahmad

Ans 3:

Class : Class 7
I agree with Ahmad

Ans 4:

Class : Class 7
I agree with Ahmad.

Ans 5:

Class : Class 8

Ans 6:

Class : Class 7
h,o,x,s,n i think it is the answer

Ans 7:

Class : Class 7
There is a mistake.Actually there are 6 lettersThose are-H, O, S, X, Z, N

Ans 8:

Class : Class 7
please explain the answer in details

Ans 9:

Class : Class 7
I also agree with Ahmad

Ans 10:

Class : Class 7
It is five letters since H,O,S,X and Z

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