International Maths Olympiad Forum By SOF Olympiad Trainer - Page 486
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Garv Agarwal from Somerville School Noida, Noida
Subject :IMO    Class : Class 6

Ans 1:

Abhijay Dutta from Salt lake School, kolkata
Class : Class 8

Ans 2:

A from Amu, Mumbai
Class : Class 6
30

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sujata patel from Podar International, Pune
Subject :IMO    Class : Class 5

Ans 1:

Aharshi Kauri from Bishnupur High School, Bishnupur Bankura
Class : Class 7
C

Ans 2:

saumit from Narayana E-techno, mumbai
Class : Class 5
C for Correct

Ans 3:

Aarushi from Sherwood high , Bangalore
Class : Class 6
I made a silly mistake in this

Ans 4:

rethish from Veltech, Avadi
Class : Class 3

Ans 5:

Pratham Dave from GNS, Bangalore
Class : Class 7
C

Ans 6:

Hari Govind from Delhi Public School Chandigarh , Chandigarh
Class : Class 6

Ans 7:

rethish from Veltech, Avadi
Class : Class 3

Ans 8:

rethish from Veltech, Avadi
Class : Class 3
pls explain this question

Ans 9:

Koustavi Chakraborty from DELHI PUBLIC SCHOOL, PUNE
Class : Class 5
THE CORRECT ANSWER IS OPTION C

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Yash Suresh Karwa from Prince Academy, PARBHANI
Subject :IMO    Class : Class 4

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Samman Poddar from St Joseph Convent school , Sambalpur
Subject :IMO    Class : Class 6

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Aditya Sai Vemparala from Amanora school, Pune
Subject :IMO    Class : Class 7

Ans 1:

Aditya Sai Vemparala from Amanora school, Pune
Class : Class 10
No answer is 2000 sorry

Ans 2:

shaurya aggarwal from scholars rosary senior secondary school, rohtak
Class : Class 9

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Aditya Sai Vemparala from Amanora school, Pune
Subject :IMO    Class : Class 7

Ans 1:

AYUSHMAN JAY from KV1 school, KANPUR
Class : Class 7
Option C is correct ,as , area of big semi circle = 14 * 14 * 22/(7*2) = 14 * 22 = 308 then we will subtract the area of unshaded 2 semi circle(which is a whole circle ), = 7 * 7 * 22/7 = 7*22 = 154 ,Hence , area of shaded portion is , = area of big semi circle - are of two small semi circle = 308 - 154 = 154 sq. cm

Ans 2:

Souptik Poi from Calcutta Boys' School, Kolkata
Class : Class 7

Ans 3:

muskan kapoor from muskan kapoor, Amritsar
Class : Class 8

Ans 4:

SOUHARDYA SARKAR from PATHA BHAVAN HIGH SCHOOL, kolkata
Class : Class 5
option third is right

Ans 5:

Prisha Hemchandra Lokhande from NPS Whitefield, Bangalore, Bangalore
Class : Class 8
I think C is the correct answer... 154

Ans 6:

Devavrat Sharma from Podar International School Powai, Mumbai
Class : Class 7
its C. as 1/2 x 22/7 x 196 - 22/7 x 49 = 154 cm2

Ans 7:

Sampurna Mandal from DAV Public School Jagganath Talcher, Angul
Class : Class 8
Here the given answer option D is wrong . The correct answer is option C.

Ans 8:

Hemant Kumar Arora from Rockwell International School, Hyderabad
Class : Class 8
c is correct308-154=154 you have done this308 154=462hence option c is correct

Ans 9:

Naitik Mundra from International School Rheintal, Buchs Sankt Gallen
Class : Class 9

Ans 10:

POORVA MEHROTRA from STUDY HALL LUCKNOW, Lucknow
Class : Class 8

Ans 11:

Aniket kumar from kendriya vidyalaya, Delhi
Class : Class 8
C for corecct

Ans 12:

kushagraghuryani2016 from DPS, New Delhi
Class : Class 8
c is correct

Ans 13:

Shreeya Amol Tade from English Medium School , Pune
Class : Class 10
Option C is the answer

Ans 14:

Saanvi Roy from St. Paul's High School, Patna
Class : Class 7

Ans 15:

VIBHU SHARMA from Mount St Mary, NEW DELHI
Class : Class 8
C is correct

Ans 16:

dhirendra from Shri O P Jindal Vidya Niketan, Mundra Kutcch
Class : Class 4
option C,154 is correct answer

Ans 17:

Yash from Sri kumarans educational council, Bangalore
Class : Class 9
c is correct

Ans 18:

Nila Pillai from Chennai public School, Chennai
Class : Class 6

Ans 19:

Arnav Shresth from ,
Class : Class 7

Ans 20:

Rick Banerjee from Calcutta Boys School, Kolkata
Class : Class 8

Ans 21:

Naitik Mundra from International School Rheintal, Buchs Sankt Gallen
Class : Class 9
C is correct

Ans 22:

Chaitanya L K from SKCHEC, bangalore
Class : Class 8
c is correct

Ans 23:

Bhakti from DPS Durg, Bhilai
Class : Class 7
C is the correct answer.

Ans 24:

Ditya Goel from Presidium, Gurgaon
Class : Class 8
Answer is (C)Diameter of bigger circle=28 cmradius=28/2=14 cmArea of semicircle=1/2*22/7*14*14=4312/14=308 sq.cm2 semicircle=circleArea=22/7*7*7=1078/7=154 sq.cmArea left=308-154=154 cm

Ans 25:

Shreeya Amol Tade from English Medium School , Pune
Class : Class 10

Ans 26:

Akshara from NPS, Bengaluru
Class : Class 8
Yes , i agree ...Option c is the ans.

Ans 27:

Archishman Pal from Sri Krishna Mission School, Agartala
Class : Class 9

Ans 28:

Aarav Jain from St Xaviers High School Sector 48 , Gurugram
Class : Class 7
wth option c 154cm2 is CORRECT COME ON SOF U GOTTA CHANGE THIS

Ans 29:

Samarth from Central school , Chennai
Class : Class 7
Ayo it's c only B is incorrect pls fix this.

Ans 30:

UTKARSH SAWARN from AIR FORCE SCHAOOL AMBALA CANTT, AMBALA CANTT
Class : Class 8
c is correct

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Sayudha Biswas from k.v.s kailashahar, Kailashahar
Subject :IMO    Class : Class 8

Ans 1:

yagvalakya from B V B Vidyashram pratap nagar, JAIPUR
Class : Class 9
√3844=62 Hence the answer is c

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Prisha Singhal from Springdales School, Pusa Road, New Delhi
Subject :IMO    Class : Class 7

Ans 1:

Souritra Roy from Saltlake Shiksha Niketan, Kolkata
Class : Class 7
let the price of object B be x the the price of object A is (6x-100) now ATP, 1(6x-100) + 4*x=1400 =>6x-100 + 4x=1400 =>10x -100=1400 =>10x=1500 =>x=1500/10 =>x=150 now the price of object A=150*6-100 =800(d)

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JEEVESH SINGLA from LADM DAV PUBLIC SCHOOL BUDHLADA, MANSA
Subject :IMO    Class : Class 10

Ans 1:

U from It public, Jaipur
Class : Class 10
D

Ans 2:

Sachin from Shri Krishna , Mahendergarh
Class : Class 10
D Because a+b+c=0 And, a3+b3+c3=3abc

Ans 3:

Nikharv from Zebar, Ahmedabad
Class : Class 10
Answer is 3abc cause'. Centroid in coordinate geometry is equal tO X1+X2+X3/2 , Y1+Y2+Y3/2 THEREFORE 0 EQUAL TO X CORDINATE ANT SO A+B+C EQUAL TO ZERO

Ans 4:

Vaibhav Elisetti from sri chaitanya techno school Nallagandla, Hyderabad
Class : Class 7
IT IS D BECAUSE 3abc IS equal to A CUBE+B CUBE+C CUBE

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JEEVESH SINGLA from LADM DAV PUBLIC SCHOOL BUDHLADA, MANSA
Subject :IMO    Class : Class 10

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