International Maths Olympiad Forum By SOF Olympiad Trainer - Page 528

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Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1

The answer is C.


Ans 2:

Class : Class 8
this question should be reformed. the saying vulgar fraction giving answer decimal fraction.

Ans 3:

Class : Class 10
Answer is D

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Subject :IMO    Class : Class 5

State 'T' for true and 'F' for false.
(i) The fraction is equal to the decimal number 0.24.
(ii) In proper fraction, numerator is smaller than the denominator.
(iii) are equivalent fractions.

A
B
C
D


there is no correct answer in the given optionsit is True, True, False.6/25 = 0.24 and in a proper fraction the numerator is smaller than denominator2/5, 6/15 are equivalent fractions but 10/15 is not.... so it is false (if it is given as 10/25 then it is true)

Ans 1:

Class : Class 8

Ans 2:

Class : Class 4

Ans 3: (Master Answer)

Class : Class 1

The correct answer should be True, True, False.

We will rectify the correction in the next edition.


Ans 4:

Class : Class 8

Ans 5:

Class : Class 7

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 5

Ans 2:

Class : Class 7
Wrong question seems on both the sides .

Ans 3:

Class : Class 6
wrong question with symbol. So we get extra 1 point.

Ans 4:

Class : Class 6
it was sign....pls mark the sign properly... the division sign looks like sign

Ans 5:

Class : Class 7
The division sign is looking same as addition sign

Ans 6:

Class : Class 4
yes the division sign looks like the addition sign, that is why I got it wrong

Ans 7:

Class : Class 8
it is looking like addition problem and sign

Ans 8:

Class : Class 5
Yes that is their issue they have written division sign as addition sign.

Ans 9: (Master Answer)

Class : Class 1

The correct answer is C.

952 ÷ 8 = x ÷ 3

119  = x ÷ 3

Therefore, x = 119 X 3 = 357


Ans 10:

Class : Class 8
answer is c

Ans 11:

Class : Class 6
error from sof site side they made division look like addition and multiplication also like addition that is why i got it wrong but the correct answer is 357 option c

Ans 12:

Class : Class 4
Yes, my also was wrong because it was plus sign on both sides. its not looking like division sign at all. i zoomed it and check

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 8
Given data is a+b=180°,a-b=56° Then , (a+b)+(a-b)=(180°+56°) The answer we get is 2a=236° therefore a=118° Then b=180°-118°=62°

Ans 2:

Class : Class 7
A=118andB=62

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 7
1. Hexagon 2. Pentagon 3. Heptagon 4. Octagon 5. Nonagon 6. Decagon

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 8
OK SIR THANKYOU

Ans 2: (Master Answer)

Class : Class 1

The correct answer is B.

720 X 83 =  59760

59760 - 825 = 58935

If we round off 58935 to the nearest hundred then we will get 58900


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Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1

The correct answer is A.

India and Bangladesh played 34 matches altogether.


Ans 2:

Class : Class 6
(MASTER ANSWER)

Ans 3:

Class : Class 6
26easy

Ans 4:

Class : Class 6
(A) 34 India played 26 matches. Bangladesh played 8 matches. Total played=26+8 =34 matches

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Subject :IMO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1

The correct answer is D.


Ans 2:

Class : Class 8
C

Ans 3:

Class : Class 7

Ans 4:

Class : Class 4
How

Ans 5:

Class : Class 4
D

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Subject :IMO    Class : Class 1

Ans 1:

Class : Class 9

Ans 2:

Class : Class 3
need to draw clearly otherwise we will end up getting wrong answer

Ans 3:

Class : Class 9

Ans 4:

Class :
South

Ans 5:

Class : Class 9

Ans 6:

Class : Class 7

Ans 7:

Class : Class 7

Ans 8:

Class : Class 9
it should be north because working it out clearly shows it

Ans 9:

Class : Class 9

Ans 10:

Class : Class 8

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7
Let the angle be x It's supplement=(180-x)° A/q (x+30)°=2×(180-x)° x+30°=360°-2x x+2x=(360-30)° 3x=330° x=330°÷3 x=110° The angle=x=330°

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