International Maths Olympiad Forum By SOF Olympiad Trainer

Aditya Prasad from Notre Dame , Gumla

Subject :IMO Class : Class 9

A spherical ball of lead, 3 cm in diameter is melted and recast into three spherical balls. The diameter of two of these are
1.5 cm and 2 cm respectively. The diameter of the third ball is ______.

A 2.66 cm
B 2.5 cm
C 3 cm
D 3.5 cm

please give me a solution...

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Ans 1:

Rudra kumar from Jawahar Navodaya vidyalaya, Sherghati

Class : Class 9

4/3π{3}^3=4/3π{1.5^3+2^3+x^3} 27=3.375+8+x^3 15.625=x^3 X=2.5 Correct option is B

Ans 2:

Kenil Vrajeshkumar Gandhi from ,

Class : Class 1

Ans 3:

Kenil Vrajeshkumar Gandhi from ,

Class : Class 1

Ans 4:

PRABHANSHU PATHAK from D.A.V. PUBLIC SCHOOL, SINGRAULI

Class : Class 7

C

Ans 5:

Nagala from Velammal theni , Theni

Class : Class 9

The answer is 2.5

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Mehta Manish from Christ School, Bhavnagar

Subject :IMO Class : Class 6

What are the materials for the imo exam ? Pls tell me

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Bhabani Prasad from Narayan School, Kolkata

Subject :IMO Class : Class 5

Is 0 a natural number?

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

No, it is not.

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Bhabani Prasad from Narayan School, Kolkata

Subject :IMO Class : Class 5

Is 0 a natural number?

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Hardik Goel from Sarla Chopra DAV CP School Sector 56, Gautam budh Nagar

Subject :IMO Class : Class 8

Brother is to sister as niece is to ___.

(A) Mother

(B) Daughter

(C) Aunt

(D) Nephew

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is D.

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Bhabani Prasad from Narayan School, Kolkata

Subject :IMO Class : Class 5

Complete the number pattern using suitable numbers for following question.

1, 121, 12321, 1234321, _____.

(A) 123454321

(B) 12354321

(C) 12345321

(D) 1234554321

What was the use of the highlighted portion?

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Ans 1:

jitvika from fundus high school, karimnagar

Class : Class 5

A) 123454321

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Bhabani Prasad from Narayan School, Kolkata

Subject :IMO Class : Class 5

DIRECTION : The given graph shows the temperature taken on a certain day. Study the graph and answer the following question.

The increase in temperature is greatest from ____.

(A) 10 am to 11 am

(B) 11 am to 12 pm

(C) 12 pm to 1 pm

(D) 1 pm to 2 pm

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Admin from revisewise, Noida

Class : Class 1

The correct answer is B.

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Sampurna Mandal from DAV Public School Jagganath Talcher, Angul

Subject :IMO Class : Class 6

A tin of oil was full. When six bottles of oil were taken out and four bottles of oil were poured into it, it was full. How many bottles of oil can the tin contain?

(A) 40

(B) 30

(C) 70

(D) 80

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is A.

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RUDRA.JIN DAL from DPS noida, Noida

Subject :IMO Class : Class 3

The difference between the greatest and the smallest number is _____.

(a) 3460 cm
(b) 3640 cm
(c) 3406 cm
(d) 3604 cm

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Ans 1:

Rajveer from DPS, Bengaluru

Class : Class 3

b

Ans 2:

Amyra Chopra from Ivy World School Jalandhar, Jalandhar

Class : Class 2

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Siddharth Sancheti from Center Point School, Nagpur

Subject :IMO Class : Class 1

How many steps are required to reach the pond from the starting point?

(a) 12
(b) 14
(c) 18
(d) 7

Can't get it...i also thinks answer is 7...howz 14

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Sneha Sarkar from South city international school, Kolkata

Class : Class 7

please let me understand

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