International Maths Olympiad Forum By SOF Olympiad Trainer - Page 764
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Vansh Goel from Spring Dale Senior School, AMRITSAR
Subject :IMO    Class : Class 4

Ans 1:

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

Ans 2:

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

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

Ans 1:

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

Ans 2:

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 3:

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

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:

Saloni Saini from JPHS, Jaipur
Class : Class 6
B

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

Ans 1:

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

Ans 2:

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

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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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pjaini21 from a, Jabalpur
Subject :IMO    Class : Class 10

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Dhiyanesh from National Model Matriculation Higher secondary school, Coimbatore
Subject :IMO    Class : Class 6

Ans 1:

ARYAN AGRAWAL from NPS KORAMANGALA, BANALORE
Class : Class 8
the sum of the square of every numbers are the numbers given at the below

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Aarush from Modern Delhi Public School , Faridabad
Subject :IMO    Class : Class 4

Ans 1:

Abhijay Dutta from Salt lake School, kolkata
Class : Class 8

Ans 2:

dveep jain from mindful gurukul, Mumbai
Class : Class 4
Answer is A Thursday

Ans 3:

Trilochan from Sairam Vidayalaya, Chennai
Class : Class 4
super dveep jain

Ans 4:

sagar from lotus valley international school gurgaon, Gurgaon
Class : Class 4
answer is b saturday

Ans 5:

Shaurya from Udgam, ahmedabad
Class : Class 9
Answer is b saturday

Ans 6:

lasya priya.ch from ravindra bharati school, hyderabad
Class : Class 4

Ans 7:

Shriyan Gupta from Gems Modern Academy, Dubai
Class : Class 7
The answer is B

Ans 8:

Nandini from Blue Ridge Public School, Pune
Class : Class 5
yeah answer is b saturdaybecause 1 month from19 december is 18 jan

Ans 9:

NEEV SINGH from VISHWA BHARATI PUBLIC SCHOOL, Noida
Class : Class 8
Answer is B Saturday

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Swamev Gupta from Amity International school, Gurgaon
Subject :IMO    Class : Class 4

Ans 1: (Master Answer)

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

Ans 2:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7

Ans 3:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
It will be c Both of you are right.

Ans 4:

Rohan Mrinal Banerjee from The Heritage, Kolkata
Class : Class 4
I agree with Noida

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udaypnayar from DELHI PUBLIC SCHOOL, Bengaluru
Subject :IMO    Class : Class 7

Ans 1:

Swati from Ryan, Bengaluru
Class : Class 8
the correct answer is B. there are two small semicircles that form one circle when joined. so after joining it forms 1 circle with a diameter of 14 which means it has a radius of 7. area= 7*7*(22/7)= 154 in the big semicircle it has a diameter of 28 which means it has a radius of 14. area = (14*14*22)/(7*2) = 616 area of shaded part = 616-154= 462 thus the correct option is B

Ans 2:

Rakesh Shah from ,
Class : Class 7
option a

Ans 3:

Rishit Jain from Dps, Meeru5
Class : Class 10

Ans 4:

meena gautam from AECS-4,Anushaktinagar, Mumbai
Class : Class 7
yes it should be 154

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Dhiyanesh from National Model Matriculation Higher secondary school, Coimbatore
Subject :IMO    Class : Class 6

Ans 1:

VANSH Aggrawal from Surajkund International School, Faridabad
Class : Class 8
see the solution

Ans 2:

ARYAN AGRAWAL from NPS KORAMANGALA, BANALORE
Class : Class 8
i think that the sum of all numbers accept 3 are even but they told that i am wrong

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