International Maths Olympiad Forum By SOF Olympiad Trainer

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Subject :IMO    Class : Class 3

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6
my answer is 4 but you marked it wrong

Ans 2:

Class : Class 6
the answer is 4{d}

Ans 3:

Class : Class 6
my answer is 4 but you marked it wrong

Ans 4:

Class : Class 5
Srijit, you are absolutely right!

Ans 5:

Class : Class 3

Ans 6:

Class : Class 6
Their ( SOF Olympiad Trainer) solution is saying four , still they have marked 3 .

Ans 7:

Class : Class 6

Ans 8:

Class : Class 4
your answer is wrong

Ans 9:

Class : Class 6
The answer should be D. 4 as C, H, A, and I have at least a line of symmetry

Ans 10:

Class : Class 6
the answer should be D,4 and not C,3 as the letters in CHAIR are C,H,A,I but not R have a line of symmetry.

Ans 11:

Class : Class 5
my answer is 4 but you marked it wrong

Ans 12:

Class : Class 4
my answer is 4 but you marked it wrong

Ans 13:

Class : Class 3
the answer is 4{d}

Ans 14:

Class : Class 6
my answer is 4 but it is marked as 3

Ans 15:

Class : Class 6

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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 8
the answer is(b) 65

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Subject :IMO    Class : Class 9

The following table gives the ages of teachers in XYZ school.₹

A teacher is selected at random from the group, then which of the following statements is INCORRECT?

A Probability of a teacher having age greater than or equal to 35, is
B Probability of ateacher having age more than or equal to 25 and less than 40, is
C Probability of a teacher selected is of age not less than 30, is
D Probability of a teacher selected from the youngest group, is


In the age group 35-40, it should be 300 instead of 320 .Only then is the answer coming ..according to the solution it is 300.

Ans 1:

Class : Class 9

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Subject :IMO    Class : Class 7

Which of the following statements is CORRECT?
Statement-1 :Mathematics textbook for Class VII has 320 pages. The chapter ‘Symmetry’ runs from page 261 to page 272. The ratio of the number of pages of this chapter to the total number of pages of the book is 3 : 81
Statement-2 :In a school of 100 students, only 2 out of 5 students can participate in a quiz. The percentage of students that participate in the quiz is 40%.

A Only Statement-1
B Only Statement-2
C Both Statement-1 and Statement-2
D Neither Statement-1 nor Statement-2


Ans 1:

Class : Class 8
I have confusion in statement 1 but 2nd statement are correct. 1st statement in first no of pages in symmetry chapter is 12. total no pages is 320. the ratio is 12:320 =3:81 = 1 :27 2nd statement 2 out of 5 can participate means 40% of the student the 40% of 100 is 40 the percentage of students that participate in the quiz = 40/100*100 40%

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Subject :IMO    Class : Class 7

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Subject :IMO    Class : Class 3

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5
As per DMAS rules, the Answer is D

Ans 2:

Class : Class 6
yes, we also got the same answer. SOF should explain what rukle they followed

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 2

Ans 3:

Class : Class 2

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