International Maths Olympiad Forum By SOF Olympiad Trainer - Page 445

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7
this question should be reformed. the saying vulgar fraction giving answer decimal fraction.

Ans 2:

Class : Class 9
Answer is D

Ans 3: (Master Answer)

Class : Class 1

The answer is C.


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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: (Master Answer)

Class : Class 1

The correct answer should be True, True, False.

We will rectify the correction in the next edition.


Ans 2:

Class : Class 7

Ans 3:

Class : Class 8

Ans 4:

Class : Class 6

Ans 5:

Class : Class 6

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 7
answer is c

Ans 2:

Class : Class 7
it is looking like addition problem and sign

Ans 3:

Class : Class 4
it was sign....pls mark the sign properly... the division sign looks like sign

Ans 4:

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

Ans 5:

Class : Class 5
Wrong question seems on both the sides .

Ans 6:

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

Ans 7:

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

Ans 8:

Class : Class 3
wrong question with symbol. So we get extra 1 point.

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 5

Ans 11:

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

Ans 12:

Class : Class 3
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

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7
A=118andB=62

Ans 2:

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°

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

Ans 3:

Class : Class 6
(MASTER ANSWER)

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4
D

Ans 2:

Class : Class 4
How

Ans 3:

Class : Class 7
C

Ans 4: (Master Answer)

Class : Class 1

The correct answer is D.


Ans 5:

Class : Class 6

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Subject :IMO    Class : Class 1

Ans 1:

Class : Class 7

Ans 2:

Class : Class 9

Ans 3:

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

Ans 4:

Class : Class 7

Ans 5:

Class : Class 8

Ans 6:

Class :
South

Ans 7:

Class : Class 9

Ans 8:

Class : Class 9

Ans 9:

Class : Class 8

Ans 10:

Class : Class 8
it should be north because working it out clearly shows it

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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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