International Maths Olympiad Forum By SOF Olympiad Trainer - Page 725
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Darshana Shah from Ramniwas bajaj english high school, Mumbai
Subject :IMO    Class : Class 5

Ans 1:

y rahaav karthikeyan from the indian public school, TIRUCHENGODE
Class : Class 9
141

Ans 2:

Sumit G from Greenwood High International, Bengaluru
Class : Class 8
D

Ans 3:

SAGNIK CHAKRABORTY from DELHI PUBLIC SCHOOL , KOLKATA
Class : Class 9
The answer is D

Ans 4:

Ruchi Khanna from strawberry fields high school , Chandigarh
Class : Class 5
how?really puzzled!!!

Ans 5:

y rahaav karthikeyan from the indian public school, TIRUCHENGODE
Class : Class 9
The answer is 141

Ans 6:

Anay Gupta from Elpro International School, Chinchwad, Pune
Class : Class 7
n

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arnav makani from The Gurukul sector-20, Panchkula
Subject :IMO    Class : Class 6

Ans 1:

TANMAY KAMAT from BILLABONG HIGH INTERNATIONAL SCHOOL THANE, THANE
Class : Class 6
There are 1000 lots . 3/4 are full. i.e. 3/4 * 1000=750 750-200(no. of compact cars)=550 standard cars Therefore answer is 'A'

Ans 2:

sanjaya from v.s. v, sunabeda
Class : Class 6
answer is A

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arnav makani from The Gurukul sector-20, Panchkula
Subject :IMO    Class : Class 6

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arnav makani from The Gurukul sector-20, Panchkula
Subject :IMO    Class : Class 6

Ans 1:

Aryp piparsania from Maharshi vidya mandir , Chhatarpur
Class : Class 6
5/24 x=3/8X=3/8-5/24X=4/24So 24 out of 4 rectangular must be shaded

Ans 2:

Aryp piparsania from Maharshi vidya mandir , Chhatarpur
Class : Class 6

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arnav makani from The Gurukul sector-20, Panchkula
Subject :IMO    Class : Class 6

Ans 1:

Archit Sahoo from V S Vidyalaya, sunabeda
Class : Class 9
A=Twice of B ,C=65,so as per question, A=C+17 ,then A will be 65 +17=82 then B will be half of A that is 41

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suhani mahapatra from Indian Heights School, Delhi
Subject :IMO    Class : Class 3

Ans 1:

Admin from SOF, Noida
Class : Class 10
Answer : D
To tip the scale to the right, the weight of the chocolates should be more than 37
Weight of 1 chocolate = 4 gms
Weight of 9 chocolates = 36 gms
Weight of 10 chocolates = 40 gms
Hence atleast 10 chocolates are needed to tip the scale to the right.

Ans 2:

Vidit Jain from Bombay Scottish, Mumbai
Class : Class 6
U

Ans 3:

LALIT MANI from K R Mangalam World School, New Delhi
Class : Class 6
the answer should be 10

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Vansh Goel from Spring Dale Senior School, AMRITSAR
Subject :IMO    Class : Class 4

Ans 1:

Admin from SOF, Noida
Class : Class 10
Answer : A
6923
1. '6' is double of '3'
2. '9' is third multiple of 3 and '3' is 1/3 of '9'
3. '2' is the smallest even number

Ans 2:

Nishka Singh from KV Nad Aluva, Ernakulam
Class : Class 5

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swapnesh from tata dav public school, keonjhar
Subject :IMO    Class : Class 5

Ans 1:

Shivani Gupta from Queens College, Indore
Class : Class 6
b is even number but all other 3 are odd numbers so ans should be b

Ans 2:

Haroon T K from Silver Hills public school , Calicut
Class : Class 5

Ans 3:

Saloni Saini from JPHS, Jaipur
Class : Class 6
B

Ans 4:

OISHIK KUNDU from Delhi Public school North kolkata, baranagar
Class : Class 4
it can be option B but there is an other formula. Add all the digits of all the 4 options. Option A,B,C would be 27 but option D would be 26. That makes the difference between option A,B,C with D. So the answer is option D.

Ans 5:

Vaikhari Sonawane from symbiosis school, Nashik
Class : Class 10
c and d as solution is given of adding digits☺🤔

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Revati Umesh Jadhav from DCIS karmala dist solapur maharashtra, KARMALA
Subject :IMO    Class : Class 6

Ans 1:

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

Corrected the question. Minus sign was missing

Solution:
David's current age = 3x -2
David's age eight years before = 3x -2 -8 = 3x - 10
Sally's age = David's age eight years before = 3x -10
Sally's age after 4 years = 3x - 10 + 4 = 3x -6

Ans 2:

Siddhi mehta from Manav Rachna International School, Gurgaon
Class : Class 6

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Krishiv Goyal from Ridge Valley School, Gurgaon
Subject :IMO    Class : Class 5

Ans 1:

Arushi from Indira National School, Pune
Class : Class 9
66 plus 82 is 148 and only 120 bags are there so 148 minus 120 , 28 red haversacks will be there

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