International Maths Olympiad Forum By SOF Olympiad Trainer

Yajnesh Maheshwari from Bishops CoEd School KLN, Pune

Subject :IMO Class : Class 5

Monu is thinking of a four digit number.
• The fourth digit is the greatest.
• When the third digit is divided by the first digit, the quotient is 2.
• The difference between the second and third digit is 1.
• The first digit is double of 2.

A3768
B4789
C5698
D1239

I

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Ans 1:

Dhiaan Motta from Singapore International School, Mumbai

Class : Class 6

I bet it is B)4789

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Anwesha Kale from wisdom world school, pune

Subject :IMO Class : Class 5

Find the mirror image of Fig. (X) from the given options.Fig. (X)

A
B
C
D

mirror image is the same image but is in opposite direction

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Ans 1:

Anwesha Kale from wisdom world school, pune

Class : Class 5

mirror image is a image but in opposite direction

Ans 2:

Vihaan Patil from Bombay Scottish School, Mahim Mumbai

Class : Class 6

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Nandhakishore Madan from Padma Seshadri Bala Bhavan, Chennai

Subject :IMO Class : Class 1

Which tree has mangoes more than 5 but less than 7?
A
B
C
D

yay

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Ans 1:

Prajisha Basu from SCTS, Chennai

Class : Class 4

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AD from Vibgyor Highschool, Pune

Subject :IMO Class : Class 3

Manan bought a pen, a book and 2 erasers. If he had 1000 rupee note, then how much money did he receive in change?

A ₹ 635
B ₹ 655
C ₹ 653
D ₹ 645

hm

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ARYAN DAS from LOKHANDWALA FOUNDATION SCHOOL, MUMBAI

Subject :IMO Class : Class 6

Niharika walks thrice around a square field of side 22 m. Girish walks twice around a rectangular field with length 10 m and breadth 12 m. Who covers more distance and by how much?

A Girish, 20 m
B Niharika, 200 m
C Girish, 176 m
D Niharika, 176 m

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Ans 1:

Diti from Shreyas foundation, ahmedabad

Class : Class 9

D. Niharika, 176 m

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VIDHANT GARG from DPS GREATER FARIDABAD, FARIDABAD

Subject :IMO Class : Class 9

The value of p upto 35 decimal places is give below:
3.14159265358979323846264338327950288
Find the probability of occurring 8 in it.

A1/3
B1/5
C5/36
D1/7

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Ans 1:

Pranav Nair from Gopal Sharma International School, Mumbai

Class : Class 9

There are five 8's in the 35 decimal places of pi, therefore 5/35 in the reduced form will provide 1/7. Option D is the correct answer.

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anu from Haralur, Bengaluru

Subject :IMO Class : Class 2

Alisha and her friend have some shapes given below.

Alisha thought of the shapes that are similar in a certain way as follows:

On what basis did Alisha distinguish the given shapes?

A The shapes are made up of only four sides.
B The shapes are made up of only straight lines.
C The shapes are made up of only curved lines.
D The shapes are made up of more than four sides.

b] the shapes are only made up of straight lines

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Ans 1:

Sarthak from Mayoor Private School, Abu Dhabi

Class : Class 2

Ans 2:

Mugdha Bangthai from Delhi public school, Nazira

Class : Class 4

Ans 3:

Mugdha Bangthai from Delhi public school, Nazira

Class : Class 4

Alisha chooses the shapes which are only made up of straight lines.

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anu from Haralur, Bengaluru

Subject :IMO Class : Class 2

The given figure is made up of _____ triangles, _____ square and _____ rectangle.

A 5, 1, 5
B 1, 1, 5
C 1, 5, 1
D 5, 1, 1

d]5,1,1

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Ans 1:

Mugdha Bangthai from Delhi public school, Nazira

Class : Class 4

Ans 2:

anu from Haralur, Bengaluru

Class : Class 5

Ans 3:

Mugdha Bangthai from Delhi public school, Nazira

Class : Class 4

Answer is option (D), because the figure contains 5 triangles,1 square and 1 rectangle... Thanks:D

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SOUVAGYA SAHA from De Nobili School, DHANBAD

Subject :IMO Class : Class 7

Which of the following options represents the incorrect match of the given 3-D figures and their nets?

A
B
C
D

option C and option D both are wrong . The circle in the net of the cone should be placed below rather than on the vertex.

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Ans 1:

Anika S Kumar from Alphabets International school , Chennai

Class : Class 7

Yeah it's D

Ans 2:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR

Class : Class 10

yes I agree with Amika Rustagi. The answer is clearly option d , not c , because option C can be a open cuboidal box , so it can be correct , while , option d is clearly wrong because you cannot even make somethig out of it with the help of net

Ans 3:

Garv from Prudence School Ashok Vihar, Delhi

Class : Class 10

yes dddddd

Ans 4:

Anamkhan Mulla from Navrachna Sama, Vadodara

Class : Class 7

both c and d are wrong

Ans 5:

Kavyam Rustagi from Delhi Public School, Ethalbari , Binnaguri

Class : Class 4

Answer needs to be the Option D, not the Option C.

Ans 6:

Jaiansh Dabas from St Xaviers High School, Gurgaon

Class : Class 7

c and d are wrong

Ans 7:

Anvi from DPS, Noida

Class : Class 8

both c and d are wrong, a lot of ques are wrong in this test

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Ansh Jain from DPS, Mahendra Hills

Subject :IMO Class : Class 6

State ‘T’ for true and ‘F’ for false. (A) Two distinct lines meeting at a point are called concurrent lines. (B) The centre of a circle is always in its interior. (C) A line has no end points. (A) (B) (C) A F T F B F T T C T F F D T T T I think the answer is B. But it's saying it's D.

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