International Maths Olympiad Forum By SOF Olympiad Trainer - Page 774
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om subham pati from Dps ranchi, Ranchi
Subject :IMO    Class : Class 8

Ans 1:

ADITI SACHIN RANE from LIONS DNYANPEETH KHAMGAON, KHAMGAON
Class : Class 4
from where the 12 come?

Ans 2:

D PragyaTapsi from dav public school, hyderabad
Class : Class 3

Ans 3:

Mukund Gupta from Jusco School South Park , Jamshedpur
Class : Class 8

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Rameshwari from Jain English School Ambad, Ambad
Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
860% of 50= (860/100)x50 and 50% of 860 is (50/100)x860

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Asmi Raniga from Indian School Ghubra, Muscat
Subject :IMO    Class : Class 8

Ans 1:

Anidroid ,Aniruddha from Modern DPS, Faridabad
Class : Class 8
6

Ans 2:

Omayr from Army Public School Yol Cantt, Dharamshala
Class : Class 8

Ans 3:

Admin from SOF, Noida
Class : Class 10
Answer:C

Solution
Work done by A in 1 day = 1/9
Work done by B in 1 day = 1/9 + 50% of 1/9 = 3/18 = 1/6
Days needed by B to complete the work = 6 days

Ans 4:

Asmi Raniga from Indian School Ghubra, Muscat
Class : Class 8
answer is coming as B in site

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Yash Mehta from GIIS, Singapore
Subject :IMO    Class : Class 4

Ans 1: (Master Answer)

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

Ans 2:

Tathagat Sahoo from Tathagat Sahoo, Pune
Class : Class 4
It should be 5. 3 removed from center triangle and 2 joining the top of the 3 triangle on the bottom there remains 4 triangles : 3 on the bottom and 1 outer triangle

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Asmi Raniga from Indian School Ghubra, Muscat
Subject :IMO    Class : Class 8

Ans 1:

om prakash sharan from modern delhi public school, faridabaad
Class : Class 7
both the options c and d are correct

Ans 2:

ARYAN AGRAWAL from NPS KORAMANGALA, BANALORE
Class : Class 8
(D) one angle is 90 degree

Ans 3:

Senthil from Einstien Public School, Coimbatore
Class : Class 9
ANS:DIAGONALS ARE EQUAL

Ans 4:

Admin from SOF, Noida
Class : Class 10
Answer : Diagonals are equal. Corrected option B to say "Diagonals are equal"

Ans 5:

Admin from SOF, Noida
Class : Class 10
Answer : Diagonals are equal. Corrected option B to say "Diagonals are equal"

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Asmi Raniga from Indian School Ghubra, Muscat
Subject :IMO    Class : Class 8

Ans 1:

Admin from SOF, Noida
Class : Class 10
Answer : -3/35 We have corrected the option C as -3/35. Thanks for pointing out.

Ans 2:

adrijab from DELHI PUBLIC SCHOOL, PANIPAT REFINERY, Panipat
Class : Class 9
you are correct. the answer is wrong as given here. it should be-3/35.

Ans 3:

Admin from SOF, Noida
Class : Class 10
Answer : -3/35 We have corrected the answer. Thanks for pointing out.

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Asmi Raniga from Indian School Ghubra, Muscat
Subject :IMO    Class : Class 8

Ans 1:

Tejas from GV, BANGALORE
Class : Class 10
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shalini from pon vidyashram chennai, Chennai
Subject :IMO    Class : Class 3

Ans 1:

Gaurav Patel from kV raigarh, Raigarh
Class : Class 6
13

Ans 2:

AREEN from BOLTON SCHOOL, Secunderabad
Class : Class 5
Answer is C that is 13

Ans 3:

Aviraj Gupta from Lotus Valley International School Gurgaon, Gurgaon
Class : Class 3

Ans 4:

Niren Dawda from Vikhe patil, Pune
Class : Class 8

Ans 5:

Anay Bansal from DPS ELDECO , Lucknow
Class : Class 3
C 13

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Yash Mehta from GIIS, Singapore
Subject :IMO    Class : Class 4

Ans 1: (Master Answer)

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

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Ninad Patil from Sterling school, Mumbai
Subject :IMO    Class : Class 3

Ans 1:

Soham Gupta from JSSIS Dubai, Dubai
Class : Class 6
b is the answer

Ans 2:

ADYAASHAKTI MAHAPATRA from Aditya Birla Public School, Rayagada
Class : Class 10
As all the circles are devided in 10 parts. answer B in which 5 are sheded is 4 5/10 is correct

Ans 3:

Sarang Pande from Podar International School, Rajkot
Class : Class 4
Ans: (B). There is mistake in placement of the option and the figures. Option A has only one row. while others have two rows of circles.

Ans 4:

Sarang Pande from Podar International School, Rajkot
Class : Class 4

Ans 5:

Ishwari Sunil Patil from Nirmal international school, Pachora
Class : Class 7
it's b because 4 circles are shaded and 1 is shaded half(5/10).

Ans 6:

AREEN from BOLTON SCHOOL, Secunderabad
Class : Class 5
Answer is B.Count the shaded part

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