International Maths Olympiad Forum By SOF Olympiad Trainer

samik from Sri Sri Ravishankar Vidya Mndir, Mumbai

Subject :IMO Class : Class 7

Study the statements carefully.
(1) Every integer is a rational number and every fraction is a rational number.
(2) A rational number is positive, if p and q are either both positive or both negative.
(3) A rational number is negative, if one of p and q is positive and other is negative.
(4) If there are two rational numbers with common denominator, then the one with the larger numerator is larger than the other.Which of the following options hold?

ABoth (1) and (4) are incorrect
BBoth (2) and (3) are incorrect
COnly (1) is incorrect
DAll are correct

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student from school, city

Subject :IMO Class : Class 6

The number of obtuse angles in the given figure is ________.

A2
B5
C4
D6

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Ans 1:

Subharsish Kashyap from Carmel school, Jorhat

Class : Class 8

option b is correct because there are 5 obtuse angles : ROS, QOS, POS, ROT, QOT

Ans 2:

Prabhav Kaushik from DPS Noida, Noida

Class : Class 10

Ans 3:

Siddhanth Subramanian from Global Indian International School , Singapore

Class : Class 7

Ans 4:

Ishayu Poddar from NPS Whitefield, Bangalore

Class : Class 8

there are 5

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Pagadala Sri Pranya from Bharatiya Vidya Bhavans Public School Vidyashram, HYDERABAD

Subject :IMO Class : Class 5

In the given figure, DE = HI = AL = 2 cm and LK = IJ = HG = EF = 5 cm. Find the perimeter of the given figure (in cm).

A 52
B 34
C 54
D 70

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Ans 1:

Pagadala Sri Pranya from Bharatiya Vidya Bhavans Public School Vidyashram, HYDERABAD

Class : Class 5

AL=2,KJ=2,IH=2,GF=2,ED=2.SO,2 2 2 2 2=10.BC=10so10 10=20breadth=7x2=14so20 14=34how can option C be correct

Ans 2:

S Tharuni from Sanskriti, Hyderabad

Class : Class 7

the correct answer is (c)

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Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Subject :IMO Class : Class 3

Find the odd one out.

A
B
C
D

SolutionExcept (B) all the three are spherical balls.

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Ans 1:

Tavish Singh from Sanskriti School, Hyderabad

Class : Class 4

ball

Ans 2:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Class : Class 9

Ans 3:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Class : Class 9

SolutionExcept (B) all the three are spherical balls.

Ans 4:

Abhijay Saha from Delhi Public School, Megacity, Kolkata

Class : Class 3

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Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Subject :IMO Class : Class 3

Four friends were standing in a line. Lalit stood the first. Rohan is not second and Ishaan is not third. Piyush stood immidiatly before Rohan but immidiatly after Lalit. Who stood at the fourth?

ALalit
BIshaan
CPiyush
DRohan

SolutionLalit(First), Piyush, Rohan, Ishaan, Ishaan stood fourth.

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Ans 1:

Shivani Sharma from Holy Angels ISC school , Thiruvananthapuram

Class : Class 7

Lalita is first then how can Piyush stood after Lalita

Ans 2:

Nihira Tiwari from Delhi public school electronic city, Bengaluru

Class : Class 6

Focus on numbers

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Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Subject :IMO Class : Class 3

If 'Madras' is called 'Delhi', 'Delhi' is called 'Bihar', 'Bihar' is called 'Mumbai', then in which city Qutub Minar situated?

AMadras
BBihar
CMumbai
DDelhi

SolutionQutub Minar is in DelhiDelhi is called Bihar

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Ans 1:

Aamir from Dps, Uae

Class : Class 3

Good

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SOUVAGYA SAHA from De Nobili School, DHANBAD

Subject :IMO Class : Class 4

Which of the following statement is CORRECT?

AThere are seven basic symbols of the Roman numerals.
BA symbol of greater value is written to the right of a symbol of smaller value, the smaller value is added to the larger value.
CA symbol of smaller value is written to the right of a symbol of greater value, the smaller value is subtracted from the larger value.
DV is never written on the right of X.

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Ans 1:

Medha Bijjaram from Prime Academy, Mumbai

Class : Class 9

A

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ranjani from sancta maria, Hyderabad

Subject :IMO Class : Class 8

In the figure below, ABCD is a rhombus. Find x.

A39°
B40°
C49°
D29°

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Ans 1:

Parshv from Teoler High school , Jaipur

Class : Class 8

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Dev from Ambassador , Dubai

Subject :IMO Class : Class 1

The given figure is made up of identical squares. The total area of the figure is 576 cm². What is the perimeter of the figure?

A 320 cm
B 160 cm
C 240 cm
D 200 cm

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Ans 1:

Aayansh sahu from Apeejay School, Ulwe

Class : Class 4

Ans 2:

Aayansh sahu from Apeejay School, Ulwe

Class : Class 4

Ans 3:

Aayansh sahu from Apeejay School, Ulwe

Class : Class 4

Ans 4:

Aditya Sai Kedarisetty from Sri Kumarans childrens Academy DKS, Bangalore

Class : Class 7

Ans 5:

Harsh Kumar from Maharishi Vidya Mandir, Guwahati

Class : Class 8

Number of squares in given figure = 9 Area of 9 squares = 576 cm 2 Area of 1 square = 576 Ã· 9 = 64 cm2 = 8 cm Ã 8 cm â´ Side of 1 square = 8 cm â´ Perimeter of the given figure = 20 Ã 8 cm = 160 cmSo the correct answer is B