International Maths Olympiad Forum By SOF Olympiad Trainer - Page 108
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Anushka kumar from DPS paradip, odisa
Subject :IMO    Class : Class 4

Ans 1:

INDRANI GHOSH ROY from AMRITA VIDYALAYAM, Durgapur
Class : Class 5
Answer: 1, Because smallest 5 digit odd number is 10001. Therefore difference between thousandth place digit and ones place digit is 1-0=1. Answer: (C)

Ans 2:

Saksham from Bloom public school, New delhi
Class : Class 4
It's A only

Ans 3:

A V from Bombay Scottish School, Mumbai
Class : Class 7
The 2nd smallest odd 5 digit number is 10003. So difference between the ones place and thousands is 3-0=3. Ans. 3. which is option A

Ans 4:

PRANSHU AGRAWAL from The Jain International School, Bilaspur
Class : Class 6
oh thanks by mistake instead of 10003 i thought 11113

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Arundhati Dasgupta from ,
Subject :IMO    Class : Class 4

Ans 1:

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

Solution
The weight of 9 balls = 500 + 500 + 800 = 1800 g
Weight of 1 ball = 200 g
Weight of 5 balls = 1000g
PS: The figure may not be clear. We are replacing it with a more clear figure.

Ans 2:

jefrin jabez christian from cs academy, erode
Class : Class 5
figure at the top was not clear it should be clear so that students can gain marks in a justified way

Ans 3:

Srijata Biswas from Delhi Public School Newtown, Kolkata
Class : Class 9
[D] 1000g

Ans 4:

Kaushik from pebble, Bangalore
Class : Class 5
The figure is not clear on right hand side it is actually 800+500+500= 1800 kg left side = 9 balls so 1 ball weight is 1800 /9 = 200 kg 5 balls = 1000 kg answer D

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

Ans 1:

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

Ans 2: (Master Answer)

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

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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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Pratima from GIIS, Singapore
Subject :IMO    Class : Class 4

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adwaita from DPS NOIDA, Noida
Subject :IMO    Class : Class 4

Ans 1:

Aditya from Jubilee Hills Public School, Visakhapatnam
Class : Class 6

Ans 2:

Shivam Dave from Jamnabai Narsee School, Gandhinagar
Class : Class 7
The answer may be park as - You're asked Akshat is facing the mall Now he took a 3/4 turn anti-clockwise, so he is facing the Police Post Now he takes a 1/2 turn clockwise, so now he is facing the park Therefore the answer is 'A Park'

Ans 3:

harshita sahu from DPS , JABALPUR
Class : Class 4

Ans 4:

yatharth verma from EURO KIDS SCHOOL SRI GANGANAGAR, SRI GNANGANAGAR
Class : Class 4
the answer would be d

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Kushagra Gupta from Primus Public School, Bengaluru
Subject :IMO    Class : Class 4

Ans 1:

Admin from SOF, Noida
Class : Class 10
Number of Rs. 10 Notes only: 260/10 = 26 Number of Rs. 5 Notes only: 260/10 = 52 Therefore Rs. 5 notes more than Rs. 10, 52-26=26 Option (B)

Ans 2:

Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 10

Ans 3:

NEEV SINGH from VISHWA BHARATI PUBLIC SCHOOL, Noida
Class : Class 8

Ans 4:

Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 10
AFTER THE SOLUTION I FOUND IT VERY EASY

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adwaita from DPS NOIDA, Noida
Subject :IMO    Class : Class 4

Ans 1: (Master Answer)

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

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Kushagra Gupta from Primus Public School, Bengaluru
Subject :IMO    Class : Class 4

Ans 1:

aarav from GURUKUL THE SCHOOL, GHAZIABAD
Class : Class 7
answer is 11/20 as if unshaded is less than 1/2 we take it as 1/2 if it is more than 1/2 then we take it as 1 but if it is 1/2 we take it as 1/2 now count all of unshaded boxes you will get the answer

Ans 2:

Oscar Maltman from DBSEH, dubai
Class : Class 8

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Kushagra Gupta from Primus Public School, Bengaluru
Subject :IMO    Class : Class 4

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