International Maths Olympiad Forum By SOF Olympiad Trainer

k tagore from montessori school, KURNOOL

Subject :IMO Class : Class 4

The following is the bill of clothes Mr Verma bought from a shop.
If he paid ₹ 500, how much will he get back?

A ₹ 280
B ₹ 180
C ₹ 80
D ₹ 270

The correct answer is B

Ans 1:

Aayush Shere from City Pride School, Ravet, Pune

Class : Class 4

HDR FNDDXDHDYTT

Ans 2:

Reyansh Garg from Lotus Valley International School, Noida Extension

Class : Class 6

B because 320- 500= 180

Ans 3:

k tagore from montessori school, KURNOOL

Class : Class 3

The correct answer is B

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Daksh from Greenwood High, Bengaluru

Subject :IMO Class : Class 6

By how much is the difference of 166.2 and 902.5 less than their sum?

A332.4
B323.4
C331.2
D333.4

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rachana from delhi public school, NACHARAM

Subject :IMO Class : Class 3

Mohit attended a concert which started at 9 : 45 p.m. and ended at 2 : 10 a.m. How long did the concert last?

A4 hrs 25 mins
B3 hrs 55 mins
C4 hrs 45 mins
D4 hrs 15 mins

Ans 1:

rachana from delhi public school, NACHARAM

Class : Class 3

the explanation makes sense

Ans 2:

Prasanna Goswami from South Point School , Kolkata

Class : Class 4

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Devansh Pattnaik from Harvest International, Bangalore

Subject :IMO Class : Class 7

I note in my accounts book positive numbers for profits and negative numbers for losses that I make in my business. These are the entries in the book for the last seven days: 21, –19, 11, –20, 17, 25 and –13. How much profit did I make in the last week?

A 32
B 22
C 34
D 24

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Ans 1:

Tamrashi Pani from National Public School, Bangalore

Class : Class 8

Ans 2:

Aarav Bajoria from Vidya Vikasini School ICSE, Vasai East

Class : Class 7

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Daksh from Greenwood High, Bengaluru

Subject :IMO Class : Class 6

Find the value of when x = 2.

A3
B4
C5
D-2

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Ans 1:

Sejal Mittal from dlf, ghaziabad

Class : Class 6

so f olymoiad

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Priyanshu Das from Abu Dhabi Indian School, Abu Dhabi

Subject :IMO Class : Class 1

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Priyanshi Pritam from Vibgyor High, Bangalore

Subject :IMO Class : Class 3

Latika put 812 soup cans on the shelf of a shop. Giya put 74 more cans on the shelf. How many cans are there on the shelf altogether?

A 984
B 1280
C 986
D 886

very tricky

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Ans 1:

Parth Kapoor from Vidya Valley School, Pune

Class : Class 3

D

Ans 2:

Ishaan Hukumchand from Greenwood High , Bangalore

Class : Class 4

dd

Ans 3:

Abhiraj from St. Xavier's School, Burdwan

Class : Class 7

D

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Iksha from Vibgyorhigh, Pune

Subject :IMO Class : Class 2

Fill in the blanks.
1. One less than the smallest 3-digit number is ____P____ .
2. 35 tens = ____Q____ .
3. One hundred and eighty eight is same as ____R____ .

----------P------Q-----R
A 100---350---180
B 999---35---180
C 101---350---188
D 99---350---188

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Ron from pon vidyashram, Chennai

Subject :IMO Class : Class 10

A sum of money is borrowed and paid back in two annual installments of Rs 882 each allowing 5% compound interest. The sum borrowed was _______.

ARs 1620
BRs 1640
CRs 1680
DRs 1700

Nice.

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Ron from pon vidyashram, Chennai

Subject :IMO Class : Class 10

In the given figure (not drawn to scale), OABC is a quadrilateral with ABC on horizontal ground and O is vertically above A. M is the mid-point of BC. If ∠BAC = 90°, AB = AC = 16 cm and OA = 12 cm, calculate the length of OB.

A25 cm
B15 cm
C20 cm
D28 cm

I don't understand what we are finding. OC or OB clearly angle OAB is 180 degrees,

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