International Maths Olympiad Forum By SOF Olympiad Trainer - Page 488
  1. Home
  2. /  Forum

User Forum

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

Ans 1:

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

Ans 2:

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 3:

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

Ans 4:

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

Ans 5:

muskan kapoor from muskan kapoor, Amritsar
Class : Class 8

Ans 6:

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

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:

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

Ans 9:

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 10:

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 11:

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

Ans 12:

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

Ans 13:

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 14:

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

Ans 15:

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

Ans 16:

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

Ans 17:

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 18:

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

Ans 19:

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

Ans 20:

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

Ans 21:

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

Ans 22:

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

Ans 23:

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

Ans 24:

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

Ans 25:

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

Ans 26:

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

Ans 27:

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

Ans 28:

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

Ans 29:

Arnav Shresth from ,
Class : Class 7

Ans 30:

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

Post Your Answer

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

Post Your Answer

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)

Post Your Answer

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:

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 3:

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

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

Post Your Answer

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

Post Your Answer

ALBERT BERKMANS from ZYDUS SCHOOL FOR EXCELLENCE, AHMEDABAD
Subject :IMO    Class : Class 3

Ans 1:

RAGHAV VARSHNEY from CITY MONTESSORI SCHOOL GOMTINAGAR LUCKNOW, Lucknow
Class : Class 7
please check question

Ans 2:

AYUSHMAN from St Marys Convent Sr Sec School Jaipur, JAIPUR
Class : Class 6
Please correct the question , Find the value of star, smiley, pentagon respectively.

Ans 3:

AYUSHMAN from St Marys Convent Sr Sec School Jaipur, JAIPUR
Class : Class 6

Ans 4:

Tanishi Das from Inventure Academy, Bangalore
Class : Class 5
Please correct the question. The question should be " Find the value of the star, smiley

Ans 5:

Vinay Dev Jhari from Delhi Public School, Noida
Class : Class 4

Ans 6:

Abhimanyu Sinha from Army Public School, Gangtok
Class : Class 3

Ans 7:

Sayan Duary from Vidyasagar Shishu Niketan, Paschim Medinipur
Class : Class 8
Please correct the question

Ans 8:

vamsika from Yuva Bharathi Public school, coimbatore south
Class : Class 5
the values in the answers are all wrong

Ans 9:

Ved Kulkarni from vidya pratishthan's magarpatta city public school, Pune
Class : Class 3

Ans 10:

Dhrish from silver hills public school, kozhikode
Class : Class 3
please fix the question

Ans 11:

Sayan Duary from Vidyasagar Shishu Niketan, Paschim Medinipur
Class : Class 8

Ans 12:

Ishan Chavan from National Public School Chikkabanavara, Bengaluru
Class : Class 7
Please correct the question. The values to be obtained are not given properly

Ans 13:

Shreyansh Choudhury from DPS, Raipur
Class : Class 5
please rectify the question

Post Your Answer

Bitan Chakraborty from Adamas international school, Kolkata
Subject :IMO    Class : Class 4

Post Your Answer

Nariya zarna from Gajera, Surat
Subject :IMO    Class : Class 6

Ans 1:

Falguni from Navkis, Bangalore
Class : Class 7
If *sun means sum ,then how there be a minus symbol??

Ans 2:

Falguni from Navkis, Bangalore
Class : Class 7
None of them. The answer is 1568568567

Post Your Answer

Devashish from DPS, Bhopal
Subject :IMO    Class : Class 4

Ans 1:

Yash Suresh Karwa from Prince Academy, PARBHANI
Class : Class 8
A

Ans 2:

Devansh from asn senior secondary school, delhi
Class : Class 8
there are 10 lines

Ans 3:

Manav from TFS Gunjur, Bengaluru
Class : Class 4
A

Ans 4:

Aayansh jain from MRG school, Delhi
Class : Class 6
14sleeping lines 42 total lines

Ans 5:

Ishan Priyadarsi from Euro School, BENGALURU
Class : Class 7
how come A?

Ans 6:

Oscar Maltman from DBSEH, dubai
Class : Class 8

Post Your Answer

Yaiphabi from dddd, ddd
Subject :IMO    Class : Class 7

Ans 1:

Garv Agarwal from Somerville School Noida, Noida
Class : Class 4
Guys! Could you tell the answer to this problem as their is no solution available for this question

Ans 2:

Paridhi Umesh Kumar from Seven Square Academy, Thane
Class : Class 7
The answer shown is C but I think that it should be B i.e n-2

Ans 3:

Himanish Basu from Army Public School Kamaraj Road, Bangalore
Class : Class 7

Ans 4:

Himanish Basu from Army Public School Kamaraj Road, Bangalore
Class : Class 7

Post Your Answer