International Maths Olympiad Forum By SOF Olympiad Trainer - Page 319

# User Forum

Subject :IMO    Class : Class 2

## Ans 1: (Master Answer)

Class : Class 1

(B): 488 - 386 = 102

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Subject :IMO    Class : Class 7

## Ans 1: (Master Answer)

Class : Class 1

(B)

x = 180 - (100 + 25) [Sum of interior angles in triangle in 180°]
= 55°
y = 25° [Alternate angle]
m = x = 55° [Corresponding angles]
w = 180º - (55º + m) [Sum of interior angles in triangle in 180°]
= 180º - (55º + 55º) = 70º
w = z + 25º [Corresponding angles]
z = 70º - 25º  = 45°
x + y = 55º + 25º = 80°

w - y= 70º - 25º = 45°

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Subject :IMO    Class : Class 2

## Ans 1: (Master Answer)

Class : Class 1

(B): 50 tens = 500
And, 400 is less than 500.
Hence, option (B) is correct.

Class : Class 2

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Subject :IMO    Class : Class 8

Class : Class 9

Class : Class 8

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Subject :IMO    Class : Class 5

Class : Class 5
how

## Ans 2:

Class : Class 5
Shouldn't it be A. It didnt say that it has to be like u know

## Ans 3: (Master Answer)

Class : Class 1

(B): The smallest 6-digit number that can be formed is 102369.

Class : Class 7

Class : Class 5

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Subject :IMO    Class : Class 6

## Ans 1: (Master Answer)

Class : Class 1

(B):

Ritesh’s father (Varun) and Rahul’s mother(Sarika) are brother and sister.
So , Ritesh is cousin of Rahul .

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Subject :IMO    Class : Class 7

## Ans 1: (Master Answer)

Class : Class 1

The correct answer is option A.

## Ans 2:

Class : Class 7
I think the answer is C

Class : Class 8
WHY

Class : Class 8

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Subject :IMO    Class : Class 1

Class : Class 4

Class : Class 7

## Ans 3: (Master Answer)

Class : Class 1

(A): Cost of a Paperclip = â‚¹ 25
Cost of a Bag = â‚¹ 155
Cost of a Notebook = â‚¹ 86
∴ Total Required cost
= â‚¹ 25 + â‚¹ 155 + â‚¹ 86
= â‚¹ 266 i.e., CCLXVI

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Subject :IMO    Class : Class 6

Class : Class 1

(A):

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Subject :IMO    Class : Class 6

Class : Class 7
sghdhgfdy

Class : Class 6

## Ans 3: (Master Answer)

Class : Class 1

The correct answer is option D.

Class : Class 6

Class : Class 8
D

Class : Class 9

Class : Class 7
D

Class : Class 9