International Maths Olympiad Forum By SOF Olympiad Trainer
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Juhi Ghosh from Mahadevi Birla Shishu Vihar kolkata, Kolkata
Subject :IMO    Class : Class 6

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Vinay Hariharan from Podar International School, Pune
Subject :IMO    Class : Class 8

Ans 1:

Sriyansh from Surabhi , Hosapete
Class : Class 9
Let the measure of the breadth =10 Let the measure of the length = 10 original area=10 x 10 =100 new length=9.5 new breadth=10.5 new area = (100-5)(100+5)/100 new area=99.75 percent change=100-99.75 =(0,25/100) x 100=0.25% decrease

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lavansh Agarwal from jodhamal public school, Jammu
Subject :IMO    Class : Class 4

Ans 1:

sonali surana from VIBHGYOR, Mumbai
Class : Class 1

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devdutta majhi from katwa d.d.c girls h.s school, katwa
Subject :IMO    Class : Class 6

Ans 1:

Evangeli Saha from Calcutta International School, Kolkata
Class : Class 6
how did you get this answer

Ans 2:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7
Yes, but the options are wrong

Ans 3:

Divisha Agarwal from DPS Noida, Noida
Class : Class 8
yes, the ans is 10 2/5 only....

Ans 4:

Aaditya Jain from Jaypee public school, Greater noida
Class : Class 8
Yes the answer is 10.4 or10 2/5

Ans 5:

Naitik Mundra from International School Rheintal, Buchs Sankt Gallen
Class : Class 9
answer should be 10 2/5

Ans 6:

AREEN from BOLTON, HYDERABAD
Class : Class 6
True. Options are wrong...... :-(

Ans 7:

Aaditya Jain from Jaypee public school, Greater noida
Class : Class 8
As the answer will be like this(-3/5 -(-2 3/5)) * 5 1/5= 2*5 1/5/ = 10 2/5

Ans 8:

mithran from hiranandani foundation school powai, mumbai
Class : Class 5
what is the correct answer?

Ans 9:

harry potter from hogwarts, hogsmeade
Class : Class 6

Ans 10:

anveshi srimal from cathedral and john connon school, mumbai
Class : Class 7
yes what is the solution to this question?

Ans 11:

Sradha Ratheesh from MGM central Public School, Trivandrum
Class : Class 8

Ans 12:

Vedant Ranka from Jbcn, Mumbai
Class : Class 6
wrong options

Ans 13:

Sanay Pathak from Hooghly, Hooghly
Class : Class 5
I agree to the solution given by SOF Olympiad Trainer but the options are wrong.

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ARJUN SHARMA from sunvalley international school, Delhi
Subject :IMO    Class : Class 5

Ans 1:

ANURAG MOHANTY from DAV Public School Burla, SAMBALPUR
Class : Class 7

Ans 2:

Aanshi from Vibgyor High, Vadodra
Class : Class 6
It will be A

Ans 3:

ADITYA BIKRAM PARIDA from DAV PUBLIC SCHOOL, CUTTACK
Class : Class 6
it's b

Ans 4:

Vindhya sawhney from Sanskriti , Gurgaon
Class : Class 5

Ans 5:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Yes,Anurag Mohanty it is B. Have u got it correct? 😁

Ans 6:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Why can’t it be A?

Ans 7:

ANURAG MOHANTY from DAV Public School Burla, SAMBALPUR
Class : Class 7
it's B bro

Ans 8:

VAIBHAV CHAUDHARY from DPS gwalior, gwalior
Class : Class 6
b

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Devika Modi from Ahlcon International School, Delhi
Subject :IMO    Class : Class 6

Ans 1:

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

Ans 2:

ARSHIA AGARWAL from Lotus valley Noida, NOIDA
Class : Class 6

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Venneti Bhargav from gyan bharati, New Delhi
Subject :IMO    Class : Class 7

Ans 1:

K SREEKAR from SEVEN SQUARE ACADEMY, MUMBAI
Class : Class 7
d

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Venneti Bhargav from gyan bharati, New Delhi
Subject :IMO    Class : Class 7

Ans 1:

Venneti Bhargav from gyan bharati, New Delhi
Class : Class 7

Ans 2:

Ashwin Shridhar from Vidyashilp Academy, Bangalore
Class : Class 9
option a is correct. if you modify the diagram then yes d is correct.

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Venneti Bhargav from gyan bharati, New Delhi
Subject :IMO    Class : Class 7

Ans 1:

Akshat Ghosh from HXLS, Gurgaon
Class : Class 5

Ans 2:

ritik from heritage, jammu
Class : Class 8
area of rectangle = l*b = 15*21 = 315 sq m area of semi - circle = 1/2 * 22/7*r^2 =1/2* 22/7* 10.5^2=173.25 sq m area of shaded region = area of rectangle - area of circle = 315 - 173.25 = 141.75 sq m

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dev jetly from lotus valley international school noida noida, NOIDA
Subject :IMO    Class : Class 3

Ans 1:

Monika Gupta from Mayoor , Noida
Class : Class 6
ans is 24

Ans 2:

Monika Gupta from Mayoor , Noida
Class : Class 6

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