International Maths Olympiad Forum By SOF Olympiad Trainer

Naitik from Billabong High International School, Noida

Subject :IMO Class : Class 3

Simple as everything

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Aarush Dey from M P Birla Foundation Higher Secondary School, Kolkata

Subject :IMO Class : Class 4

how to create cutsom tests

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Shubhayu Banerjee from DPS Secunderabad - Nacharam - CBSE, Hyderabad

Subject :IMO Class : Class 4

More like, better answers from me

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Sonu kr mandal from Nirmala school, Dhanbad

Subject :IMO Class : Class 8

the numerator of a rational number is 17 more than it's denominator. the numerator of it's absolute is 7 more than it's denominator. find the rational number???

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Rayna from Delhi public school, Haridwar

Subject :IMO Class : Class 2

The below diagram shows the number of carrots eaten by each rabbit in a month.

Which rabbit ate two hundred and six carrots?

A Both Bunny and Coco
B Piglu
C Fluffy
D Both Ginger and Fluffy

Ans 1:

kyna from dps, uyyu

Class : Class 3

C

Ans 2:

Sai Aniruth S from SSM, CHENNAI

Class : Class 2

option C

Ans 3:

Gaurika Bhasin from Genesis global school, Noida

Class : Class 2

Option C

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Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram

Subject :IMO Class : Class 5

The difference between (4 tens 12 tenths and 25 hundredths) and (3 tens 14 tenths and 45 thousandths) is

A 10.05
B 10.005
C 10.5
D 15.005

Ans 1:

Dhriti N Bharadwaj from Kendriya Vidyalaya Sangathan, RWF, Yelahanka, Bengaluru

Class : Class 6

Ans 2:

Darshil Patil from Indira National School, Pune

Class : Class 5

so ez

Ans 3:

Varshita from GMA, Dubai

Class : Class 5

ez

Ans 4:

Maanvik Srivastava from Cornerstone, Hyderabad

Class : Class 5

Ans 5:

Sarah Nawalkar from Rajhans Vidhyalaya, Mumbai

Class : Class 5

,difficult

Ans 6:

Samaira from Shri Ram Millenium School, Delhi

Class : Class 5

OMG It is so tough Does someone no the answerIf yes, for god sake please tell the solution because the SOF people have not given it in the answer sheet.

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Yashvi Diya singh from Aps dk, delhi

Subject :IMO Class : Class 9

The value of (x – a)³ + (x – b)³ + (x – c)³ –3(x – a)(x – b)(x – c), when a + b + c = 3x is ______.

A 3
B 2
C 1
D 0

I couldn't understand the solution given by you

Ans 1:

Suhan Pati from Sarala Birla Gyan Jyoti, Guwahati

Class : Class 9

the answer is 0 . i hope you know the formula a^3 + b^3 + c^3 - 3abc =0 , when a+b+c = 0. take x-a = p, x-b=q and x-c=r. so a/q we have to find p^3 + q^3 + r^3 - 3pqr. now notice p+ q+ r= x-a+x-b+x-c = 3x-a-b-c = 0. so p^3 + q^3 + r^3 - 3pqr =0 as p+q+r=0