International Maths Olympiad Forum By SOF Olympiad Trainer - Page 571

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 5
Answer is A.

Ans 2:

Class : Class 9

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6
Srijit, you are absolutely right!

Ans 2:

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

Ans 3:

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

Ans 4:

Class : Class 6
MY ANSWER WAS MARKED BY ME AS 4 BUT THEY GAVE IT THAT I MARKED 3!!!!!!!!!!!

Ans 5:

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.

Ans 6:

Class : Class 9
why they are giving the answer as 4

Ans 7:

Class : Class 6

Ans 8:

Class : Class 10
Their ( SOF Olympiad Trainer) solution is saying four , still they have marked 3 .

Ans 9: (Master Answer)

Class : Class 1

Ans 10:

Class : Class 4

Ans 11:

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

Ans 12:

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 13:

Class : Class 10
the correct ans should be option D

Ans 14:

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

Ans 15:

Class : Class 4
the answer is 4{d}

Ans 16:

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 17:

Class : Class 6
your answer is wrong

Ans 18:

Class : Class 6

Ans 19:

Class : Class 7
the answer is 4{d}

Ans 20:

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

Ans 21:

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

Ans 22:

Class : Class 10
it is a printing mistake

Ans 23:

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

Ans 24:

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

Ans 1:

Class : Class 9

Ans 2:

Class : Class 9

Ans 3:

Class : Class 9
option c

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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.

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Subject :IMO    Class : Class 7

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7

Ans 3:

Class : Class 7

Ans 4:

Class : Class 6

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 8
As per DMAS rules, the Answer is D

Ans 2:

Class : Class 6
The answer should be D not A. In the first line they have used BODMAS, but in the second they have not and if we use BODMAS we will get option d.

Ans 3:

Class : Class 6
No according to Bodmas rule the answer given by SOF is CORRECT

Ans 4:

Class : Class 6
Yes It should be D according to bodmas rule

Ans 5:

Class : Class 8
According to DMAS it should be D.

Ans 6:

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

Ans 7:

Class : Class 6
But i checked with a calculator which gave the answer as a which is 69.48

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 8

Ans 2:

Class : Class 6

Ans 3:

Class : Class 8

Ans 4:

Class : Class 8

Ans 5:

Class : Class 5

Ans 6:

Class : Class 9
did you all get this answer

Ans 7:

Class : Class 8

Ans 8:

Class : Class 5

Ans 9:

Class : Class 7
question is write but it is too tough for 5 th std that to just for 1 mark

Ans 10:

Class : Class 5
wasted 20 mins for this only

Ans 11:

Class : Class 7
QUESTION IS NOT WRONG IN THIS WE HAVE TO SEE THE OPTION AND THEN DO IT . LIKE WE CAN ASSUME THAT TOTAL AMOUNT WAS OPTION B THEN DO THE CALLCULATION BUT FOR B WE DO NOT GET THE AMOUNT LEFT 1330

Ans 12:

Class : Class 2

Ans 13:

Class : Class 8

Ans 14:

Class : Class 2

Ans 15:

Class : Class 7

Ans 16:

Class : Class 9
approach to this problem is not given correctly in solution. thought the answer given is correct.

Ans 17:

Class : Class 8

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 5
D Is the final answer

Ans 3:

Class : Class 5
D Is the final answer

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