International Maths Olympiad Forum By SOF Olympiad Trainer - Page 391
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Priyam Bhattacharya from cambridge court high school, jaipur
Subject :IMO    Class : Class 5

Ans 1:

PRAMIT MAHAJAN from MUSHTIFUND HIGH SCHOOL, PANAJI
Class : Class 5
B Let X be buttons on shirt and Y be buttons on pant given 3X +7Y = 55

Ans 2:

nandini from father agnel school, Noida
Class : Class 7

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soumil srivastava from dps, paradip
Subject :IMO    Class : Class 6

Ans 1:

Karthikeya from Sanskriti, Pune
Class : Class 4

Ans 2:

Karthikeya from Sanskriti, Pune
Class : Class 4

Ans 3:

Raj Sanjay Deore from Adinath English medium school, Malegaon
Class : Class 6
B

Ans 4:

Nandish Mehra from D.A.V Public School, AMRITSAR
Class : Class 7

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Shaurya Arora from Lotus Valley International School, Gurugram
Subject :IMO    Class : Class 4

Ans 1:

Shaurya pratap singh from Brajkishore kindergarten school, Chapra
Class : Class 4
My answer is option C 900g

Ans 2:

Gomtiwal Meet S from Lotus School , Ahmedabad
Class : Class 4
C

Ans 3:

Vivek Sorout from The Basil world schoool, Palwal
Class : Class 5
C

Ans 4:

Suresh Gyanchandani from St. Anselms Pink City Senior Secondary School, Jaipur
Class : Class 5
C

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anika from St Joseph sen sec school Mahoba, Kulpahar
Subject :IMO    Class : Class 5

Ans 1:

PRAMIT MAHAJAN from MUSHTIFUND HIGH SCHOOL, PANAJI
Class : Class 5
C

Ans 2:

Sagar G V from Tuto Bytes, Hyderabad
Class : Class 3
What is the logic behind this question??

Ans 3:

Gourish G Bhat from Jindal Vidya Mandir, Ballari
Class : Class 5
Easiest way to answer this is when you divide the product of 432 and 280,the remainder should be 0 and choose the greatest number, which in this case it is 64

Ans 4:

Rayna Agarwal from St. Xaviers High School, Gurgaon
Class : Class 5
length 432 cm and breadth 280 cm Square tile has length = HCF (432, 280) = 8 cm Area = 8 × 8 = 64 cm2

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SANCHAY BISURIYA from R N S world school , jhansi
Subject :IMO    Class : Class 6

Ans 1:

Samreen shams from Ashok Hall Girls higher secondary school , Kolkata
Class : Class 6

Ans 2:

Jyotiraditya Ramprasad Shelke from Rajlaxmi International school Deulgao Raja, Deulgao raja
Class : Class 6
ANS is C i.e. 75

Ans 3:

Ramya Bn from Ryan International school, Bangalore
Class : Class 6
ans is C - 75

Ans 4:

DEBOSMITA GARAI from G.D.BIRLA CENTRE FOR EDUCATION, kolkata
Class : Class 6
c is correct ans

Ans 5:

Devanshu Paul from EICHER SCHOOL, Faridabad
Class : Class 6
c

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Ayushmaan from D, B
Subject :IMO    Class : Class 6

Ans 1:

Arsh Gupta from Cambridge International School, Jalandhar
Class : Class 3
b

Ans 2:

OISHIK KUNDU from Delhi Public school North kolkata, baranagar
Class : Class 4
57/95 = 51/x So, x = 51 x 95 / 57 = 17 x 5 = 85 Therefore 3x - 8 / 3x 8 = (3 x 85) - 8/(3 x 85) 8 = 255 - 8/ 255 8 = 247/263 Answer-(D) 247/263

Ans 3:

Arsh Gupta from Cambridge International School, Jalandhar
Class : Class 3
d

Ans 4:

Rutuja Chitre from MVM , MUMBAI
Class : Class 6
D

Ans 5:

Aayushi from Best English school, Ahmedabad
Class : Class 6

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Amogh from Guardian School ICSE, Dombivli
Subject :IMO    Class : Class 3

Ans 1:

arjun from NISV, Vadodara
Class : Class 3
so its d

Ans 2:

Ekansh Tandon from Fr Agnel Noida, Indirapuram
Class : Class 7
Are baloons also circle

Ans 3:

BHARTENDU BHUSHAN SHOW from ADAMAS WORLD SCHOOL, BARASAT
Class : Class 4
how answer " d " that is 16 is coming, I do not understand.

Ans 4:

SS from meridian, hyderabad
Class : Class 5
ballons also how come its is oval right

Ans 5:

Rozan nirmali from GIIS, japan
Class : Class 5

Ans 6:

Kushagra Sah from Bahrain Indian School, Manama Bahrain
Class : Class 6
Are balloons also circular or oval?

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Vaisnavi singh from Ekya JP nagar, Banglore
Subject :IMO    Class : Class 4

Ans 1:

Maulikta Ranjan from DPS Noida, Noida
Class : Class 5
I got the answer. it was tricky but I did it

Ans 2:

Ashwak from Cambridge, Jalandhar
Class : Class 8
Vaisnavi, it is very easy

Ans 3:

sudhish from St Pauls English School, Bangalore
Class : Class 2
In my very first attempt I got it wrong , but when I tried once more I got 4827 .

Ans 4:

Vaisnavi singh from Ekya JP nagar, Banglore
Class : Class 5
it is very difficult to divide such a big number

Ans 5:

Maulikta Ranjan from DPS Noida, Noida
Class : Class 5
yes, Vaishnavi. It is very difficult to divide this big number

Ans 6:

EKLAVYA GONDULE from DPS BHILAI, Bhilai
Class : Class 7

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Karmanya Gupta from DPS, Udaipur
Subject :IMO    Class : Class 6

Ans 1:

ANSHUL KUMAR from SND PUBLIC SCHOOL PALWAL, PALWAL
Class : Class 6

Ans 2:

Gurtej Singh from D A V Boys Senior Secondary School, CHENNAI
Class : Class 7

Ans 3:

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

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Arnav Vijaywargiya from DPS Gurgaon, Gurgaon
Subject :IMO    Class : Class 8

Ans 1:

Tanish Sharma from M L S D A V SR SEC Public School Narnaul , Narnaul
Class : Class 10
This equation is formed like that: Let present age =x Twenty years ago=x-20 A.T.C x-20 = 1/3 ×x -20 =1/3x-x -20 = -2/3x 20÷2/3 =30 years Age after 15 years =30+15 =45 years

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