International Maths Olympiad Forum By SOF Olympiad Trainer

Vaastav Mishra from BMPS Taxsila, Bhubaneswar

Subject :IMO Class : Class 8

Find the divisor, if the dividend is 2200, remainder is 14 less than the divisor and the divisor is one-third of the quotient.

A25
B27
C24
DNone of these

Ans 1:

DARSHIL SUBRAT from ,

Class : Class 8

Ans 2:

Ayansh Verma from National Public School ITPL, Bangalore

Class : Class 8

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Samriddhi Debnath from Garden High School, Kolkata

Subject :IMO Class : Class 3

Put the correct signs in the circles below so that the given statement becomes true.

A +,-,<
B -,+,>
C +,+,=
D -,+,=

98-35 17=80

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

(D): 98 - 35 + 17 = 80

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Aarav Srivastav from DWPS , Noida Extension

Subject :IMO Class : Class 6

ABCD is a square. 5 out of 6 identical rectangles in the smaller square have been shaded. How many more similar rectangles must be shaded so that ³⁄₈ of square ABCD is shaded ?

A3
B4
C9
D24

Ans 1:

Jeronee from Christwood School, PERUMBAKKAM

Class : Class 5

Ans is A

Ans 2:

Aarav Srivastav from DWPS , Noida Extension

Class : Class 7

Ans 3:

Aarav Srivastav from DWPS , Noida Extension

Class : Class 7

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Ruchi Sinha from DPS Gurgaon , Gurgaon

Subject :IMO Class : Class 8

If the first half of the English alphabet is reversed and then next portion of English alphabet is reversed so as ‘A’ takes the position of ‘M’ and ‘N’ takes the position of ‘Z’ then which letter will be 6^th to the left of 17^th letter to the right of 7^th letter from the left?

A U
B V
C C
D D

explanation please

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Samriddhi Debnath from Garden High School, Kolkata

Subject :IMO Class : Class 3

Study the statements carefully and select the correct option.
Statement 1 : Place value of 6 in addition of 4029 and 588 is 6.
Statement 2 : Product of 9 × 8 × 7 × 6 × 5 × 4 × 3 × 9 × 8 × 7 × 6 × 5 × 0 × 4 × 3 × 2 is 1378

A Statement 1 and 2 both are true
B Statement 1 and 2 both are false
C Statement 1 is true and 2 is false
D Statement 1 is false and 2 is true.

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

(B): 4029 + 588 = 4617 ( place value of 6 here is 600 )

Number multiplied by 0 always gives 0.
Thus , both statements 1 and 2 are false.

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Ramya from brindavan vidyalaya, Trichy

Subject :IMO Class : Class 8

Which of the following options is INCORRECT?

A The rational number 0 is the additive identity for rational numbers.
B The additive inverse of the rational number a/b is –a/b and vice-versa.
C Rational numbers are closed under the operations of subtraction, multiplication and division.
D There are infinite rational numbers between any two rational numbers.

both a and c option is false.so which to chose

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Ans 1:

Tagore Tathagath Gedela from Dimensions international College, Singapore

Class : Class 10

how

Ans 2:

rajib jana from DPS MEGA City, Kolkata

Class : Class 8

Exactly. How?!

Ans 3:

Riddhiraj Saha from St. Xeviers Institution , Panihati, Kolkata

Class : Class 8

How

Ans 4:

Joe Bipin from National Public School Agra, Bangalore

Class : Class 10

i understood it now, it is that only non zero rational numbers are closed in division, that is why it is false cause they said all and not nonzero

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Ramya from brindavan vidyalaya, Trichy

Subject :IMO Class : Class 8

Which of the following properties of rational numbers is given below?

A Commutativity of addition
B Associativity of multiplication
C Distributivity of multiplication over addition
D Distributivity of addition over multiplication

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Ans 1:

Sayan Patra from St. Theresa Convent School, KALYAN

Class : Class 10

c

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Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon

Subject :IMO Class : Class 3

If then which of the following options must be true?

A
B
C
D

D

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Ans 1:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon

Class : Class 7

D

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Avani from NPS International singapore, singapore

Subject :IMO Class : Class 5

The adjoining figure is made up of 3 similar squares, A, B and C.

Find the perimeter of the figure, if the area of square B is 64 cm².

A72 cm
B62 cm
C58 cm
D64 cm