International Maths Olympiad Forum By SOF Olympiad Trainer

Pranav from SSM, Chennai

Subject :IMO Class : Class 8

Find the value of x in the adjoining figure.

A132°
B122°
C112°
D108°

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Seerat Kaur Sowanni from Deens Academy, Bangalore

Subject :IMO Class : Class 5

Pratik is 13 ranks behind Deeksha who ranks 11^th in a class of 38 students. What is Pratik's rank from the bottom?

A24^th
B28^th
C18^th
D15^th

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Seerat Kaur Sowanni from Deens Academy, Bangalore

Subject :IMO Class : Class 5

Select the odd one out.

A
B
C
D

The answer is B because the number of sides is even

Ans 1:

Arnav Nandan from ST PETERS COLLEGE AGRA, Agra

Class : Class 9

i think this ques. is wrong because answer should be D not B SOF needs update

Ans 2:

Anush Ritvin from SSVM, Coimbatore

Class : Class 9

Ans 3:

Dhruv Bharadwaj from Elpro international School, Pune

Class : Class 7

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Avantika Jain from Greenwood High International School, Bengaluru

Subject :IMO Class : Class 4

Deepankar had a pole 7/12 m long. He cut out 1/4 m of the pole and gave it to Manish. The length of pole left with Deepankar is ______.

A3/10 m
B1/12 m
C5/12 m
D1/3 m

Ans 1:

Pradipta Kumar Jana from DELHI PUBLIC SCHOOL, RUBY PARK , Kolkata

Class : Class 8

D

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Ishat from DPS, GURUGRAM

Subject :IMO Class : Class 9

Find the mean of 25 numbers, if the mean of 15 of them is 18 and the mean of the remaining numbers is 13.

A26
B44
C39
D16

the answer given is wrong. the solution itself states the answer as d option, i.e. 16

Ans 1:

Debojyoti Majumder from South Point School , Kolkata

Class : Class 5

Ans 2:

Joshua Sen from Montfort Senior Secondary School, Roorkee

Class : Class 9

the asnwer is given as (D)16 in the solution but is marked as (C)

Ans 3:

Arnav Ranka from Gyan Bharati School, Saket, New Delhi

Class : Class 9

Yeah

Ans 4:

Nipun Abhilash from National Public School, Banashankhari, Bangalore

Class : Class 9

The answer is option D which is 16 but it is marked as C.

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Akshat Thakur from St Josephs School, Shaktinagar

Subject :IMO Class : Class 10

A leak at the bottom of a tank can empty the full tank in 6 hours. An inlet pipe fills water at the rate of 4 litres per minute. When the tank is full, the inlet is opened and due to the leak, the tank gets empty in 8 hours. The capacity of the tank is

A5260 litres
B5760 litres
C5846 litres
D6970 litres

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Shlok singh from GIIS, Bangalore

Subject :IMO Class : Class 2

Veenu buys one costliest item and one cheapest item. If he gives a ₹50 note to the seller, how much money will he get back from the seller?

A ₹25
B ₹20
C ₹35
D ₹45