International Maths Olympiad Forum By SOF Olympiad Trainer

Sanjana from Narayana e-techno , Bangalore

Subject :IMO Class : Class 8

The length and the breadth of a rectangular hall are 24 m and 18 m, respectively. What is the length of the largest straight line that can be drawn on the floor of the hall?

A24 m
B28 m
C30 m
D34 m

Ans 1:

KUSH2020 from Balavikas International School, BAnglore

Class : Class 8

30 m

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Aayushman mohapatra from Sental The Global School, Hyderabad

Subject :IMO Class : Class 8

Pointing to a photograph, a woman says, "This man’s son’s sister is my mother-inlaw". How is the woman’s husband related to the man in the photograph?

AGrandson
BSon
CSon-in-law
DNephew

Ans 1:

Myra Negi from DPS Noida, Noida

Class : Class 9

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Saarya Kancherla from Foundation School, BENGALURU

Subject :IMO Class : Class 2

The number of sleeping lines in the given figures is ______.

A2
B3
C5
D4

How is it 5?

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johanna from little champion, nagercoil

Subject :IMO Class : Class 7

Mohit ranks 16^th from the top and twelfth from the bottom in the class. How many students are there in the class?

A29
B28
C27
DNone of these

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Zakwan Arshad from The Scholar School, New Delhi

Subject :IMO Class : Class 6

Arrange the shaded fractions of the following figures in ascending order.

As, q, r, p
Bp, r, s, q
Cs, p, q, r
Dp, r, q, s

A

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Aayushman mohapatra from Sental The Global School, Hyderabad

Subject :IMO Class : Class 8

State 'T' for true and 'F' for fals.
I. An altitude of a triangle is five-third the length of its corresponding base. If the altitude be increased by 4 cm and the base be decreased by 2 cm, the area of the triangle would remain the same. The base and the altitude of the triangle respectively is 12 cm and 20 cm.
II. The perimeter of a rectangle is 140 cm. If the length of the rectangle is increased by 2 cm and its breadth decreased by 2 cm, the area of the rectangle is increased by 66 sq. cm. The length and breadth of the rectangle respectively is 35 cm and 30 cm.
III. The sum of two numbers is 2490. If 6.5% of one number is equal to 8.5% of the other number, then one of the numbers will be 1411.

	I	II	III
A	F	F	F
B	F	T	T
C	T	F	F
D	T	F	T

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Ans 1:

Avyaan Das from DPS Newtown, Kolkata

Class : Class 8

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Jaeden Thomas from Christ Academy, BANGALORE

Subject :IMO Class : Class 10

If ‘a’ and ‘b’ are rational numbers and , then (a + b)² = _______.

A121
B171
C116
D198

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Anusha from , faridabad

Subject :IMO Class : Class 9

Study the given statements carefully.

= (a + b) (b + c) (c + a)
Statement-II : a² + b² + c² – ab – bc – ca
= [(a-b²) + (b-c)² + (c-a)²]
Which of the following options holds?

ABoth Statement-I and Statement-II are true.
BStatement-I is true but Statement-II is false.
CStatement-I is false but Statement-II is true.
DBoth Statement-I and Statement-II are false.

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Aritrika Khanra from The Cambridge International school , Bangalore

Subject :IMO Class : Class 3

Two clocks P and Q are shown here. Clock-P is 20 minutes slow and Clock-Q is 30 minutes fast. Which of the following options is CORRECT?

AAccording to Clock-P, the actual time is 2:40.
BAccording to Clock-Q, the actual time after 10 minutes will be 3:20.
CBoth A and B
DNeither A nor B