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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 9
A

Ans 2:

Class : Class 9
think that you are buying toffees if you buy 2 toffees of $2 each then your total cost would be 2*$2 =$4 similarly here, (x+4)*(x+4) =x^2 + 8x + 16 hence option a

Ans 3:

Class : Class 9

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Subject :IMO    Class : Class 8

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Subject :IMO    Class : Class 8

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Subject :IMO    Class : Class 3

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Subject :IMO    Class : Class 4

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 7
the answer is 4{d}

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6
Srijit, you are absolutely right!

Ans 4:

Class : Class 6
your answer is wrong

Ans 5:

Class : Class 6
the correct ans should be option D

Ans 6:

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

Ans 7:

Class : Class 7
my answer is 4 but you marked it wrong

Ans 8:

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

Ans 9:

Class : Class 6
why they are giving the answer as 4

Ans 10:

Class : Class 7
the answer is 4{d}

Ans 11:

Class : Class 7

Ans 12:

Class : Class 6
in the solution they say 4 and it is 4 but they mark it as wrong

Ans 13:

Class : Class 6
4444444444444444444444444444444444444

Ans 14:

Class : Class 6

Ans 15:

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

Ans 16:

Class : Class 5
it is a printing mistake

Ans 17:

Class : Class 6
ddddddddddddddddddddddddd4444444444444444444444444444444444444444444444444444ddddddddddddddddd

Ans 18:

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

Ans 19:

Class : Class 5
I think that it's a printing mistake. IN solution they are writing C,H,A,I have a line of symmetry which are 4 letters, but in the answer they are giving 3

Ans 20:

Class : Class 3
my answer i 4 but they marked it wrong and showed the correct answer 3 but in the solution they are saying the answer is 4.

Ans 21:

Class : Class 5
Why is the solution answer D but, answer C? Answer 4 is answer D!!!

Ans 22:

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 23:

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

Ans 24:

Class : Class 7
Their ( SOF Olympiad Trainer) solution is saying four , still they have marked 3 .

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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
option c

Ans 2:

Class : Class 9

Ans 3:

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%

Ans 2:

Class : Class 8
12:320=3:80 in its simplest form. It is not equal to 3:81. You may simplify it like 12/320 divide both numerator and denominator by 4. You will surely get the answer as 3:80.

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Subject :IMO    Class : Class 7

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