International Maths Olympiad Forum By SOF Olympiad Trainer - Page 668
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Aniket kumar from kendriya vidyalaya, Delhi
Subject :IMO    Class : Class 5

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 9
NO correct answer is D

Ans 2:

Naira from Dps, Pune
Class : Class 5
The correct answer is D

Ans 3:

Aaryana from Amaatra Academy, Bangalore
Class : Class 6

Ans 4:

Seerat Kaur Sowanni from Deens Academy, Bangalore
Class : Class 6
I thought this was A, but then when I read the question properly, it said unshaded so, I got to know it was D

Ans 5:

KRITHYA GUPTA from LOTUS VALLEY INTERNATIONAL SCHOOL, NOIDA
Class : Class 7
correct answer is D they have asked no. of UNSHADED parts

Ans 6:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Study the given question carefully they have asked the number of unshaded triangles in the given figure not the shaded triangles in the given figure

Ans 7:

Niranjhan Rajeshkumar from Deens Academy, Whitefield, Bengaluru
Class : Class 8
The answer is D as the shaded part is in grey while the unshaded part is in white.

Ans 8:

Y Yashaswini from Dps Khajaguda, Hyderabad
Class : Class 8
It is A

Ans 9:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
I also did the same mistake . I did A . But it should be D because it has asked for the unshaded ones and not the shaded ones . Did everyone understand ????????????!!!!!!!!!!!

Ans 10:

Asmi Raniga from Indian school Ghubra, Muscat
Class : Class 7
it is A as the number of shaded parts is 9/27 so it is 1/3.

Ans 11:

Shivansh Shrivastava from Allen carrier institute, Kota
Class : Class 7
its answer is d because they had asked unshaded and you guys had not read it properly

Ans 12:

Shaina Mukherjee from DPS Sharjah, Dubai
Class : Class 5
The correct answer is A . How come D...... This must be changed at once.

Ans 13:

Harsh Shukla from DPS Bangalore East, Bengaluru
Class : Class 9
correct answer is a

Ans 14:

A.Princy angel from Tvs mhss, MADURAI
Class : Class 4

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UMANG YADAV from GOLDCREST HIGH VASHI, NAVI MUMBAI
Subject :IMO    Class : Class 6

Ans 1:

VIJAYA SREYAS B from NARAYANA OLYMPIAD SCHOOL KUKATPALLY, HYDERABAD
Class : Class 6
The answer is obviously (B) 8.

Ans 2:

Ishani Gandhi from Lourdes convent school, Surat
Class : Class 6

Ans 3:

Devang Shukla from Ryan Christian School, Mumbai
Class : Class 9
THE ANSWER IS B (18)

Ans 4:

Devang Shukla from Ryan Christian School, Mumbai
Class : Class 9
SORRY B(8) NOT 18

Ans 5:

Devang Shukla from Ryan Christian School, Mumbai
Class : Class 9
THE ANSWER IS B (18)

Ans 6:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Answer is b{8}

Ans 7:

ADVAY BANSAL from LOTUS VALLEY INTERNATIONAL SCHOOL GURUGRAM, GURUGRAM
Class : Class 6
10 what about 2 straight angles on the slant line

Ans 8:

Padmanabhan Sridhar from Delhi Public School ECity, Bangalore
Class : Class 7
(b) 8

Ans 9:

Nisarg Milan Salot from Narayana E-Techno School, Mumbai
Class : Class 8
8

Ans 10:

aditri singh from jayshree periwal high school, jaipur
Class : Class 6

Ans 11:

Yashraj from pps, pune
Class : Class 6
angle DAB, BDA, DBA, BCD, DBC, BDC, DB twice thus b

Ans 12:

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

Ans 13:

Vishal Pasala from KENDRIYA VIDYALAYA NO.I SRIVIJAYA NAGAR, Visakhapatnam
Class : Class 7
No answer is D

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ayushi gupta from Virendra Swaroop education center, Kanpur
Subject :IMO    Class : Class 5

Ans 1:

Aniket kumar from kendriya vidyalaya, Delhi
Class : Class 8
the answer is d my friend ... please answer my question

Ans 2:

Aniket kumar from kendriya vidyalaya, Delhi
Class : Class 8
the answer is d my friend ... please answer my question

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Nilanjana De from Delhi Public School North, Bengaluru
Subject :IMO    Class : Class 7

Ans 1:

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

Ans 2:

Rachit Ghivari from HIS, Hubli
Class : Class 7

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is A.

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VANSH Aggrawal from Surajkund International School, Faridabad
Subject :IMO    Class : Class 6

Ans 1:

Arvind Jena from Euroschool, Pune
Class : Class 6
A perfect number is a number who's factors excluding itself is called a perfect number this is wrong

Ans 2:

VIJAYA SREYAS B from NARAYANA OLYMPIAD SCHOOL KUKATPALLY, HYDERABAD
Class : Class 6
Both are true. [Hint:Factors of 28 are 1,2,4,7,14,28 & of 6 are 1,2,3,6]

Ans 3:

VANSH Aggrawal from Surajkund International School, Faridabad
Class : Class 8
in solution statement 1 is changed

Ans 4:

Aayush Raj from ST.Paul's Academy , Hajipur
Class : Class 6

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dhruti from R S DALAL HIGH SCHOOL, Bharuch
Subject :IMO    Class : Class 10

Ans 1:

AADITYA GUPTA from SRDAVPS, DELHI
Class : Class 10
explain the solution plz

Ans 2:

Madhav V Rajeev from kendriya vidyalaya kadavanthra , Kochi
Class : Class 10
EXPLAIN

Ans 3:

Yuvraj Karan from DAV Public School, Koyla Nagar, Dhanbad, Dhanbad
Class : Class 10
Ans.(a) 1

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Vedant shah from Zydus school for excellence 2, Ahmedabad
Subject :IMO    Class : Class 7

Ans 1:

Garv Agarwal from Somerville School Noida, Noida
Class : Class 5
yeah..... The answer is 112 and it has given the solution in the context of X only. I guessed the answer and it was right. However, I would be very grateful if you could explain in an easier and quicker method. I understood the solution but you could always provide me with a quicker method because of this question cam it would require a lot of time.

Ans 2:

Nilanjana De from Delhi Public School North, Bengaluru
Class : Class 8
C-112

Ans 3:

Rishi Gopi from Loyola, Trivandrum
Class : Class 9

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Aaveg from Somerville school, Noida
Subject :IMO    Class : Class 9

Ans 1:

ARYAN AGRAWAL from NPS KORAMANGALA, BANALORE
Class : Class 8
[C] see there are 4 sides each divided into 4 parts therefore total no. of divisions:- 4*4 = 16 considering each side as a and length for one side as l we have l^2 = a^2 + (a/16)^2 now you can find the length for all 4 sides.

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Vansh Thakker from The Somaiya school, Mumbai
Subject :IMO    Class : Class 3

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Aditi Shiv Shankar Jaiswal from Delhi Public School Jeddah, Jeddah
Subject :IMO    Class : Class 3

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