International Maths Olympiad Forum By SOF Olympiad Trainer

Aaryaman Pradhan from De paul School , Berhampur

Subject :IMO Class : Class 5

In a town, there are two public libraries. The number of books in one library is 2,84,683 and the number of books in another library is 3,71,805.

(i) What is the total number of books in both the libraries?
(ii) How many more books does the second library have than the first library?

           (a)                 (b)
A5,64,880       87,212
B6,56,488       87,122
C 6,56,498       87,122
D 4,65,880       87,211

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

(B):

(a) Total number of books in both the libraries = 284683 + 371805
= 656488

(b) Number of more books in second library than the first library = 371805 - 284683
= 87122

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Asmi Raniga from Indian school Ghubra, Muscat

Subject :IMO Class : Class 5

Mrs. Preeti had 5 litres of syrup. She poured the syrup into bottles of 300 ml each. How many bottles did she use to contain all 5 litres of syrup?

A12
B14
C17
D20

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Ans 1:

Pranjal from MVN Sector 88, Faridabad

Class : Class 5

Ans 2: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

(C): Quantity of syrup Mrs. Preeti had = 5 litres = 5000 ml

Quantity of Syrup she poured in each bottle = 300 ml

Number of bottles needed = 5000 ÷ 300 = 16.67
Therefore, 17 bottles are needed.

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Aarush Pandya from Inventure Academy, Bangalore

Subject :IMO Class : Class 2

Study the timings of daily activities of Payal as shown in the table and fill in the blanks.

• Activities that last for 1 hour in total are ___P___ and ___Q___.
• The activity that lasted for 15 minutes only is ___R___.

AP-Reading Book Q-Playing Football R-Reading Book
BP-Playing Football Q-Reading Book R-Dance Practice
CP-Playing Football Q-Reading Book R-Painting
DP-Doing Homework Q-Playing Football R-Reading Book

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

(C):

Time duration for playing football = 30 minutes

Time duration for reading book = 30 minutes
So, activities that last for 1 hour in total are
playing football and reading book.

The activity that lasted for 15 minutes only is painting.

Ans 2:

DhritismanDas from Sfs, Guwahati

Class : Class 3

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Abhinha Ajay Ovhal from Podar International School, Latur

Subject :IMO Class : Class 1

Arrange the rabbits from the greatest to the smallest.

AP, S, R, Q
BS, R, Q, P
CQ, S, R, P
DQ, R, S, P

1@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

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Ans 1:

Abhinha Ajay Ovhal from Podar International School, Latur

Class : Class 6

Ans 2:

KARNIK NAYAL from THE MILLENNIUM SCHOOL, Noida

Class : Class 2

D

Ans 3:

Abhinha Ajay Ovhal from Podar International School, Latur

Class : Class 6

Ans 4:

KARNIK NAYAL from THE MILLENNIUM SCHOOL, Noida

Class : Class 2

D

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Vedant Sharma from Silver Oaks , Hyderabad

Subject :IMO Class : Class 7

Piyali bought 28.5 metres of cloth. She used 2.5 metres of the cloth to make a shirt and 3/5 of cloth that used for the shirt, to make a matching pair of shorts. She sewed 6 shirts and some pairs of shorts for her children. If she had 1.5 metres of cloth left, then how many pairs of shorts did she sew ?

A7
B8
C9
D10

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Aman Saji from Indian School,Sohar,Sultanate of Oman., Sohar

Subject :IMO Class : Class 8

The factors of the given equation x² + 5xy - 24y² are _________.

A(x + 8y), (x - 3y)
B(x + 6y), (x - 2y)
C(x - 5y), (x + 6y)
D(x + 3y), (x + 8y)

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Ans 1:

Umang from Angel public School, Nohar

Class : Class 8

A

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Aman Saji from Indian School,Sohar,Sultanate of Oman., Sohar

Subject :IMO Class : Class 8

Which of the following is the equation of a line parallel to x-axis?

Ax = 0
Bx = 5
Cy = 5
Dy = x + 5

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Ans 1:

Hprakash09 from Billabong high Bhopal, Bhopal

Class : Class 7

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Aman Saji from Indian School,Sohar,Sultanate of Oman., Sohar

Subject :IMO Class : Class 8

Two dice are tossed. Find the probability that the total score is an even number.

A¹⁄₂
B¹⁷⁄₃₆
C¹⁄₁₈
D¹⁄₅

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Aman Saji from Indian School,Sohar,Sultanate of Oman., Sohar

Subject :IMO Class : Class 8

When x⁴ - 2x² + 1 is divided by x + 3, the quotient is x³ - 3x² + 7x - 21. Then the remainder will be

A - 21
B21
C63
D64

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Ans 1:

Aadi from Treamis World School, Bangalore

Class : Class 9

Ans 2:

sk from psbb millennium school, Chennai

Class : Class 9

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Aman Saji from Indian School,Sohar,Sultanate of Oman., Sohar

Subject :IMO Class : Class 8

If Atul finds that he is twelfth from the right in a line of boys and fourth from the left, how many boys should be added to the line such that there are 28 boys in the line?

A12
B13
C14
D15

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