International Maths Olympiad Forum By SOF Olympiad Trainer - Page 384
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Debarpan Das from Delhi Public School , Durgapur
Subject :IMO    Class : Class 5

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Debarpan Das from Delhi Public School , Durgapur
Subject :IMO    Class : Class 5

Ans 1:

Krrish Roy from DPS , Kolkata
Class : Class 9
c

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Gold mark from GYANGANGA, Havertown
Subject :IMO    Class : Class 1

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Naitik from Billabong High International School, Noida
Subject :IMO    Class : Class 3

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Aarush Dey from M P Birla Foundation Higher Secondary School, Kolkata
Subject :IMO    Class : Class 4

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Shubhayu Banerjee from DPS Secunderabad - Nacharam - CBSE, Hyderabad
Subject :IMO    Class : Class 4

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Sonu kr mandal from Nirmala school, Dhanbad
Subject :IMO    Class : Class 8

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Rayna from Delhi public school, Haridwar
Subject :IMO    Class : Class 2

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Gaurika Bhasin from Genesis global school, Noida
Class : Class 2
Option C

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kyna from dps, uyyu
Class : Class 3
C

Ans 3:

Sai Aniruth S from SSM, CHENNAI
Class : Class 2
option C

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Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Subject :IMO    Class : Class 5

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Maanvik Srivastava from Cornerstone, Hyderabad
Class : Class 5

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Dhriti N Bharadwaj from Kendriya Vidyalaya Sangathan, RWF, Yelahanka, Bengaluru
Class : Class 6

Ans 3:

Sarah Nawalkar from Rajhans Vidhyalaya, Mumbai
Class : Class 5
,difficult

Ans 4:

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

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

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