International Maths Olympiad Forum By SOF Olympiad Trainer - Page 461

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 6
m

Ans 2:

Class : Class 6
p

Ans 3:

Class : Class 6

Ans 4:

Class : Class 6

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 8

Ans 2:

Class : Class 5
Answer is A.

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Subject :IMO    Class : Class 5

Ans 1:

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

Ans 2:

Class : Class 9
the correct ans should be option D

Ans 3:

Class : Class 6

Ans 4:

Class : Class 10
the answer is 4{d}

Ans 5:

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

Ans 6:

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

Ans 7: (Master Answer)

Class : Class 1

Ans 8:

Class : Class 8
it is a printing mistake

Ans 9:

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

Ans 10:

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

Ans 11:

Class : Class 7
the answer is 4{d}

Ans 12:

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

Ans 13:

Class : Class 6

Ans 14:

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

Ans 15:

Class : Class 5
MY ANSWER WAS MARKED BY ME AS 4 BUT THEY GAVE IT THAT I MARKED 3!!!!!!!!!!!

Ans 16:

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 17:

Class : Class 6
your answer is wrong

Ans 18:

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

Ans 19:

Class : Class 6
Srijit, you are absolutely right!

Ans 20:

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 21:

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

Ans 22:

Class : Class 9
my answer is 4 but you marked it wrong

Ans 23:

Class : Class 9

Ans 24:

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.

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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

Ans 2:

Class : Class 9
option c

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
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.

Ans 2:

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

Ans 1:

Class : Class 6

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6

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

Ans 4:

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

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
Yes It should be D according to bodmas rule

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 2

Ans 3:

Class : Class 8

Ans 4:

Class : Class 5

Ans 5:

Class : Class 8

Ans 6:

Class : Class 7

Ans 7:

Class : Class 7

Ans 8:

Class : Class 2

Ans 9:

Class : Class 7
approach to this problem is not given correctly in solution. thought the answer given is correct.

Ans 10:

Class : Class 7

Ans 11:

Class : Class 5

Ans 12:

Class : Class 7

Ans 13:

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 14:

Class : Class 8

Ans 15:

Class : Class 6
question is write but it is too tough for 5 th std that to just for 1 mark

Ans 16:

Class : Class 8
did you all get this answer

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