International Maths Olympiad Forum By SOF Olympiad Trainer - Page 591

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Subject :IMO    Class : Class 9

Ans 1: (Master Answer)

Class : Class 1

The correct answer is B.


Ans 2: (Master Answer)

Class : Class 1

The correct answer is B.


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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6
correct answer is B

Ans 2:

Class : Class 9
What a stupid master!

Ans 3: (Master Answer)

Class : Class 1

The correct answer is C.

Perimeter of each square = 32 cm 
⇒ 4 × side of square = 32 cm 
⇒ Side of square = (32 ÷ 4) cm = 8 cm 
∴ Perimeter of the figure = 10 × 8 = 80 cm


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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 7
I agree with ARUNAV

Ans 3:

Class : Class 10
the answer can be 'c' as there is not enough info on 'r'

Ans 4:

Class : Class 10
the data is inadequate becuse n can be greater or smaller than m because it is mentioned only that n is not as old as m and also it is not mentioned relationship between r ad n

Ans 5:

Class : Class 7
NO HARISH

Ans 6:

Class : Class 9
I also know that the correct answer is A

Ans 7:

Class : Class 7

Ans 8:

Class : Class 5
Answer is not correct.(N) M (N) R (N) Q -> eldest to youngest (left to right)N can be at any these positions.So correct answer is data inadequate.

Ans 9: (Master Answer)

Class : Class 1

The correct answer is A.

The order from eldest to youngest is 
M, N or R, Q 
So, M is the eldest.


Ans 10:

Class : Class 7
There is no correct info about N .

Ans 11:

Class : Class 7
Data inadequate .

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Subject :IMO    Class : Class 9

Ans 1: (Master Answer)

Class : Class 1

The answer is B


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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4
Master answer

Ans 2: (Master Answer)

Class : Class 1

The correct answer is B.

Quantity of flour Beena had = 4 kg = 4000 g 
Quantity of flour used to bake cake = 3 kg 60 g = 3060 g 
Quantity of flour left with Beena = 4000 – 3060 = 940 g 
Hence, the right answer is Option B.


Ans 3:

Class : Class 4
Quantity of flour Beena had =4 kg = 4000 g. Quantity of flour used to bake cake = 3 kg 60 g = 3060 gQuantity of flour left with Beena = 4000 -3060 = 940 gHence the correct answer is Option B

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 7
since, (-4) lies left to (-1) on a number line.so, -4< -1.: A is cooler than B

Ans 2:

Class : Class 8
a

Ans 3:

Class : Class 9
a

Ans 4:

Class : Class 7
A is cooler than B

Ans 5:

Class : Class 6
Option a. A is cooler than B because if you draw a number line,-4 is less than -1. When we go to the left it is decreasing and when it goes to right, it is ascending. Regards, class 6 boy Can't tell my name.

Ans 6:

Class : Class 4

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
C

Ans 2:

Class : Class 9
c

Ans 3:

Class : Class 6
If we take a as 4 and b as 2, then according to communicative property, 4-2=2 but 2-4=-2 so 2 and -2 are not equal but, if we take a as 4 and b as 4, then it will be 4-4=0 and 4-4=0. Thus, a should be = b

Ans 4:

Class : Class 6
EASY

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 5

Ans 2:

Class : Class 5

Ans 3:

Class : Class 4

Ans 4:

Class : Class 9
THE ANSWER SHOULD BE 81 BECAUSE,SQUARE OF 9=9*9[NINE MULTIPLY BY NINE] HENCE THE ANSWER IS EIGHTY ONE.

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 6
Answer is (D)

Ans 2:

Class : Class 5
D

Ans 3:

Class : Class 6
Answer is (D)

Ans 4:

Class : Class 7

Ans 5:

Class : Class 3
D

Ans 6:

Class : Class 5
D

Ans 7:

Class : Class 3
B

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 9
-200+-600+900 =[-200-600] +900 =[-800]+900 =900-800 100 THE ANSWER IS 100

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