International Maths Olympiad Forum By SOF Olympiad Trainer

Hargun Wadhwa from Manav Rachna International School, Sector 46 Gurgaon

Subject :IMO Class : Class 3

How many four digit numbers can be formed by using the digits 8, 4, 0, 7 (each digit used only once)?

A 18
B 24
C 16
D 12

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Sanchi Tater from Rbk school, mumbai

Subject :IMO Class : Class 8

There are 86,400 seconds in a day. How many days long is a second? Express your answer in scientific notation upto 3 decimal places.

A1.157 × 10^-6
B1.234 × 10^-5
C1.157 × 10^-5
D1.432 × 10^-4

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Viraaj Jassal from LEARNING PATHS SCHOOL, MOHALI

Subject :IMO Class : Class 6

What is the smallest number of squares that must be added so that the line AB becomes the line of symmetry?

A 1
B 2
C 3
D 4

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Viraaj Jassal from LEARNING PATHS SCHOOL, MOHALI

Subject :IMO Class : Class 6

Which of the following square(s) must be shaded so that given figure is symmetric along both LM and AB?

A R and S
B P only
C Q and P
D Q only

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Shreyasi Padihary from TCIS, Bangalore

Subject :IMO Class : Class 5

Which of the following Venn diagrams best depicts the relationship amongst, "Rose, Apple and Flower"?

A
B
C
D

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Shreyasi Padihary from TCIS, Bangalore

Subject :IMO Class : Class 5

Which of the following statements is INCORRECT?

AThe place value of the digit '7' in the number 678335 is the successor of 69999.
BIn the number 7895748, the place value of '9' is 90000.
CThe place value of the digit '4' in the number 472549 is the predecessor of 400001.
DThe place value of the digit '2' in the number 325789 is the predecessor of 19999.

Both option A and D are incorrect.

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Ans 1:

Shreyasi Padihary from TCIS, Bangalore

Class : Class 5

Both option A and D are incorrect

Ans 2:

Shreyasi Padihary from TCIS, Bangalore

Class : Class 5

Ans 3:

Shreyasi Padihary from TCIS, Bangalore

Class : Class 5

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Krishiv Chandan Sukul from Seven 11 Scholastic School, Mumbai

Subject :IMO Class : Class 4

The given bar graph shows the types of sports people like. Study the graph carefully and answer the following question.

______ more people like swimming than basketball.

A 8
B 3
C 4
D 5

Option C is correct.

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Prathamesh from podar international school rajkot, Rajkot

Subject :IMO Class : Class 9

Area of a rectangular field is (2x³ – 11x² – 4x + 5) sq. units and side of a square field is (2x² + 4) units. Find the difference between their areas (in sq. units).

A4x⁴ – 2x³ – 27x² – 4x + 11
B4x⁴ – 2x³ + 27x² + 4x + 11
C4x⁴ + 27x² + 4x – 11
D4x⁴ + 2x³ + 27x² + 4x + 11