International Maths Olympiad Forum By SOF Olympiad Trainer - Page 450
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Swarit from Indian School Wadi kabir, Muscat
Subject :IMO    Class : Class 4

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Preeti tanwar from DON BOSCO ACADEMY, Patna
Subject :IMO    Class : Class 6

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is B.

19-6+2=28+?-15

Let the missing number be x.

Then ,19 - 6 + 2 = 28 + x - 15 

=> x = 19 - 6 + 2 - 28 + 15 = (19 + 2 + 15) - (6 + 28) = 36 - 34 = 2


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Siddharth from Kennedy Global The High, hydeabad
Subject :IMO    Class : Class 6

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is B.


There is no pair in the alternate digits starting from 6. 
Answer-(b) Two


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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: (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 2:

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

Ans 3:

rethish from Veltech, Avadi
Class : Class 7
yes that's correct admin

Ans 4:

SHIRIN BHATTACHARYYA from St. Joseph's Convent School, KHANDWA
Class : Class 9
We have to use some common sense Zach (nuts)

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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:

Mishika shah from little angels high school, gwalior
Class : Class 8
Ans is A as per the solution also

Ans 2:

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

Ans 3:

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 4:

Mohammed Najl from GEMS New Millennium School Al Khail, Dubai
Class : Class 5
It is A!

Ans 5:

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

Ans 6:

devyansh from MVN, faridabad
Class : Class 4
ans. is 'A' please correct it

Ans 7:

Riya Nambiar from TSVS, Bhopal
Class : Class 8

Ans 8:

Devesh Kumar Shrivastava from Ramjas School, Pusa Road, New Delhi
Class : Class 8
THE ANSWER IS A ONLY! SOF IS SHOWING WRONG ANSWER

Ans 9:

Tintin from , Kolkata
Class : Class 7
ans iassanswer is a

Ans 10:

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

Ans 11:

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

Ans 12:

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 13:

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 14:

Dipjyoti Das from techno, Cooch Behar
Class : Class 2
Ans is A ,if you think you are wrong check the solution

Ans 15:

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

Ans 16:

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

Ans 17:

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

Ans 18:

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 19:

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

Ans 20:

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

Ans 21:

Sai Srivardhan from National Public School Gopalapuram , Chennai
Class : Class 8
A is answer

Ans 22:

Mohammed Najl from GEMS New Millennium School Al Khail, Dubai
Class : Class 5
Why would they put B as a different combination of letters?

Ans 23:

Ashmi Narkar from VIBGYOR High, Airoli, Navi Mumbai
Class : Class 6
According to the solution, A is correct. Why has SOF given D as correct answer? SOF please correct this.

Ans 24:

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

Ans 25:

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 26:

Aaditva from DPS Vasant Kunj, New Delhi
Class : Class 6
A. The solution is correct but the option they are showing is wrong.

Ans 27:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 8
A is the correct answer

Ans 28:

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

Ans 29:

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

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tanmay shinde from Delhi Public school Rau Indore , indore
Subject :IMO    Class : Class 3

Ans 1:

Sun from PSBB , Chennai
Class : Class 8
Answer c cause there are four balls in each and 45 +45 =90,90/6=15

Ans 2:

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

Ans 3:

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

Ans 4:

Niranjhan Rajeshkumar from Deens Academy, Whitefield, Bengaluru
Class : Class 6
answer-15

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tanmay shinde from Delhi Public school Rau Indore , indore
Subject :IMO    Class : Class 3

Ans 1:

Kashika Goel from DPS Noida, Noida
Class : Class 4

Ans 2:

Daksh Chanani from Sri Sri academy, HOWRAH
Class : Class 5
B IS THE ANSWER

Ans 3:

Advika Narkar from VIBGYOR High Airoli, Navi Mumbai
Class : Class 5
B B B We say B Do you agree To our answer B?

Ans 4:

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

Ans 5:

Bhumanyu Bora from Delhi Public School, Duliajan
Class : Class 3
yeah 8 is the answer

Ans 6:

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 7:

Agrima from bbps, Bhiwadi
Class : Class 2

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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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