User Forum Subject :IMO    Class : Class 8

Class : Class 9

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
A

Subject :IMO    Class : Class 8

Subject :IMO    Class : Class 8

Subject :IMO    Class : Class 3

Class : Class 4

Class : Class 4
p

Class : Class 4

Ans 4:

Class : Class 4
m

Subject :IMO    Class : Class 4

Class : Class 3

Ans 2:

Class : Class 6

Subject :IMO    Class : Class 5

Class : Class 8

Ans 2:

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.

Class : Class 6

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

Class : Class 8
my answer is 4 but you marked it wrong

Class : Class 6

Ans 9:

Class : Class 6
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 10:

Class : Class 7
the correct ans should be option D

Class : Class 7

Class : Class 8

Ans 13:

Class : Class 7
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.

Class : Class 1

Ans 15:

Class : Class 8
my answer is 4 but it is marked as 3

Ans 16:

Class : Class 6
Srijit, you are absolutely right!

Ans 17:

Class : Class 8
Their ( SOF Olympiad Trainer) solution is saying four , still they have marked 3 .

Ans 18:

Class : Class 7
why they are giving the answer as 4

Ans 19:

Class : Class 8
my answer is 4 but you marked it wrong

Class : Class 5

Ans 21:

Class : Class 7
it is a printing mistake

Ans 22:

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

Ans 23:

Class : Class 6

Subject :IMO    Class : Class 8

Ans 1:

Class : Class 8

Subject :IMO    Class : Class 9

Class : Class 9

Class : Class 9

Ans 3:

Class : Class 9
option c

Subject :IMO    Class : Class 7

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.