International Maths Olympiad Forum By SOF Olympiad Trainer - Page 592
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RISHABH from SUMMER FIELD, GURGAON
Subject :IMO    Class : Class 5
HI

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Ashwin Shridhar from Vidyashilp Academy, Bangalore
Subject :IMO    Class : Class 7

Ans 1:

Zach from Frank Anthony public school, Bangalore
Class : Class 8
There is no "C" you pinhead.They are all "A".

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is C.

The line segment joining a vertex of a triangle to the midpoint of its opposite side is called a median of the triangle. 
The perpendicular line segment from a vertex of a triangle to its opposite side is called an altitude of the triangle. 
A triangle has three altitudes and three medians. 


Ans 3:

SHIRIN BHATTACHARYYA from St. Joseph's Convent School, KHANDWA
Class : Class 10
We have to use some common sense Zach (nuts)

Ans 4:

Naman from Uis, Bangalore
Class : Class 8

Ans 5:

rethish from Veltech, Avadi
Class : Class 3
yes that's correct admin

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Avinash Mishra from Central Hindu School, Gorakhpur
Subject :IMO    Class : Class 10

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct anser is D.

Circumference = 24πm, Width of track= 2 m 

As we know that circumference = 2πr
Therefore, 2πr = 24π

                   r = 12m

Now, Radius of outer circle = Radius of inner circle + Width of the track = 12 m + 2 m = 14 m
Again, Circumference of outer circle = 2πR = 2 X 3.14 X 14 = 88 m 

Hence, the quantity of wire required to surround the path completely is 88 m. 


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Mridul Jain from Shishukunj International School Indore, Indore
Subject :IMO    Class : Class 5

Ans 1:

Shreyansh Gupta from MVN, faridabad
Class : Class 6
ans. is 'A' please correct it

Ans 2:

Ahaan Mittal from Primus Public School, Bengaluru
Class : Class 8
A is correct answer, It says in solution But they say d is correct

Ans 3:

Devesh Kumar Shrivastava from Ramjas School, Pusa Road, New Delhi
Class : Class 10
THE ANSWER IS A ONLY! SOF IS SHOWING WRONG ANSWER

Ans 4:

Vikram from AVM, Mumbai
Class : Class 5
Yes. One answer, different solution. Too many mistakes.

Ans 5:

Mystic Girl from NPS, Bnagalore
Class : Class 6
if answer is A then why is D givenpls. answer fast...

Ans 6:

Riya Nambiar from The Sanskaar Valley School, Bhopal
Class : Class 10

Ans 7:

Srijita Saha from The New town School, Kolkata
Class : Class 5
Option A is the only answer.

Ans 8:

Dhriti Das Purkayastha from Inventure Academy, Bangalore
Class : Class 7

Ans 9:

Arkajyoti Das from techno, Cooch Behar
Class : Class 9
Ans is A ,if you think you are wrong check the solution

Ans 10:

Mohammed Najl from Credence high school Dubai, Dubai
Class : Class 5
Why would they put B as a different combination of letters?

Ans 11:

Shaurya Yadav from Delhi Public School,Sec-81, Faridabad
Class : Class 5
It will be CD as it is the only consecutive pair of letter.

Ans 12:

shreyash rawat from podar international school, pune
Class : Class 8
HA CHAL BE SAHI ANSWER BATA JALDI KAR

Ans 13:

Daksh from RKC, Rajkot
Class : Class 8
Answer A , C D is the correct answer !!!!!!

Ans 14:

Mohammed Najl from Credence high school Dubai, Dubai
Class : Class 5
It is A!

Ans 15:

Vedanth S from Kumarans Childrens Academy, Bangalore
Class : Class 6
answer is 'A'.

Ans 16:

Tintin from Kolkata, Kolkata
Class : Class 10
ans iassanswer is a

Ans 17:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
According to the solution, A is correct. Why has SOF given D as correct answer? SOF please correct this.

Ans 18:

Sai Srivardhan from Maharishi Vidya Mandir Chetpet, Chennai
Class : Class 9
A is answer

Ans 19:

SPARSH KHANDELWAL from TREE HOUSE HIGH SCHOOL KALYAN, KALYAN WEST
Class : Class 5
CD IS ONLY consucutive so only ans A

Ans 20:

Dhriti Das Purkayastha from Inventure Academy, Bangalore
Class : Class 7

Ans 21:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
the solution is correct but option given as correct answer is wrong, did not expect this from SOF

Ans 22:

Mishika shah from little angels high school, gwalior
Class : Class 9
Ans is A as per the solution also

Ans 23:

Shrutisri S G from Vyasa internationa school, bangalore
Class : Class 5
I think it is D .. A related F and B to E then next CD so on

Ans 24:

TANVI D MARGHADE from PODAR INTERNATIONAL SCHOOL POWAI, MUMBAI
Class : Class 6
A IS THE CORRECT ANS

Ans 25:

from Delhi Public School Noida, GHAZIABAD
Class : Class 6
If you see the solution , it says it is CD but in answers it says D

Ans 26:

JOIS GEORGE from Dimension, Singapore
Class : Class 5
Why is it like this? Even solution says its A... I'm mind blown

Ans 27:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 10
A is the correct answer

Ans 28:

Aaditva from Vasant Valley School, New Delhi
Class : Class 8
A. The solution is correct but the option they are showing is wrong.

Ans 29:

Shravya from vibgyor high vadodara, Sivasagar
Class : Class 5
A

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KARTIK SHINDE from Delhi Public school Rau Indore , indore
Subject :IMO    Class : Class 3

Ans 1:

Niranjhan Rajeshkumar from Deens Academy, Whitefield, Bengaluru
Class : Class 8
answer-15

Ans 2:

Shiven Dinkar from DPS NOIDA Sector 30, Delhi
Class : Class 4
15 kg

Ans 3:

Abhyudaya from lucknow public school, madhoganj
Class : Class 3
15kg

Ans 4:

Sun from PSBB , Chennai
Class : Class 9
Answer c cause there are four balls in each and 45 +45 =90,90/6=15

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KARTIK SHINDE from Delhi Public school Rau Indore , indore
Subject :IMO    Class : Class 3

Ans 1:

Professional GOD avi from CCWS, Jaipur
Class : Class 3
c will be the answer because I am very INTELLIGENT nobody is more smarter than me1

Ans 2:

Ishika Sahay from HFS International, Mumbai
Class : Class 4

Ans 3:

Bhumanyu Bora from Delhi Public School, Duliajan
Class : Class 5
yeah 8 is the answer

Ans 4:

Kashika Goel from DPS Noida, Noida
Class : Class 7

Ans 5:

Shiven Dinkar from DPS NOIDA Sector 30, Delhi
Class : Class 4
8 is the answer because 80 multiplied by 8 is =640 Answer from dear Shiven Dinkar

Ans 6:

Daksh Chanani from Sri Sri academy, Kolkata
Class : Class 7
B IS THE ANSWER

Ans 7:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
B B B We say B Do you agree To our answer B?

Ans 8:

Prasanna Hegde from Vibgyor High Horomavu, BENGALURU
Class : Class 5
B

Ans 9:

Agrima from Vibgyor, Pune
Class : Class 9

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Owi shamsundar bartakke from Shrimant maisaheb bavdekar academy, Kolhapur
Subject :IMO    Class : Class 9

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is B.


Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is B.


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Harleen Singh from Green Acres Academy, Mumbai
Subject :IMO    Class : Class 5

Ans 1:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
What a stupid master!

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is C.

Perimeter of each square = 32 cm 
⇒ 4 × side of square = 32 cm 
⇒ Side of square = (32 ÷ 4) cm = 8 cm 
∴ Perimeter of the figure = 10 × 8 = 80 cm


Ans 3:

krishneil from Elpro international school, Pune
Class : Class 6
correct answer is B

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Vedanth S from Kumarans Childrens Academy, Bangalore
Subject :IMO    Class : Class 5

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 9
I also know that the correct answer is A

Ans 2:

Shrish from NPS , Chennai
Class : Class 10
the answer can be 'c' as there is not enough info on 'r'

Ans 3:

Harish Kumar from SPDS , PANRUTI
Class : Class 7
NO HARISH

Ans 4:

Kaira Bhargava from DPS BANGALORE EAST, Bengaluru
Class : Class 5
Answer is not correct.(N) M (N) R (N) Q -> eldest to youngest (left to right)N can be at any these positions.So correct answer is data inadequate.

Ans 5:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Data inadequate .

Ans 6:

Moksha Shah from DPS, Ahmedabad
Class : Class 5

Ans 7:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
There is no correct info about N .

Ans 8:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7

Ans 9:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 7
I agree with ARUNAV

Ans 10: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is A.

The order from eldest to youngest is 
M, N or R, Q 
So, M is the eldest.


Ans 11:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
the data is inadequate becuse n can be greater or smaller than m because it is mentioned only that n is not as old as m and also it is not mentioned relationship between r ad n

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Parth patil from Podar international school, Aurangabad
Subject :IMO    Class : Class 9

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The answer is B


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