International Maths Olympiad Forum By SOF Olympiad Trainer - Page 125

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Abhang from Pisk, Kolhapur

Subject :IMO Class : Class 8

Suppose for the principal P, rate R% and time T years the simple interest is S and compound interest is C. Consider the possibilities :
(i) C > S
(ii) C = S
(iii) C < S
Which of the following options hold?

AOnly (i) is correct.
BEither (i) or (ii) is correct.
CEither (ii) or (iii) is correct.
DOnly (iii) is correct.

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Indra Sinha from south point, kolkata

Class : Class 9

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Shriyan Sengupta from Julien Day School, Kalyani, Kalyani

Subject :IMO Class : Class 4

The difference between the place values of '8' and '4' in 78045 is ____ .

A 7690
B 7960
C 7900
D 7000

JKO

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Yashit Saxena from Delhi Public School Miyapur, Hyderabad

Subject :IMO Class : Class 1

Which of the following is not a correct match ?
A
B
C
D

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Divij Gupta from Lotus Valley International school, Noida

Subject :IMO Class : Class 10

In a trapezium ABCD, AB∥DC, DC = 2AB and EF∥AB, where E and F lie on BC and AD respectively such that If diagonal DB intersects EF at G, then 7EF = kAB. Find the value of k.

A7
B9
C10
D11

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Havish jale from CHIREC INTERNATIONAL SCHOOL, Hyderabad

Subject :IMO Class : Class 4

Priyanka read a 252 pages book in a week. She read same number of pages each day. How many pages did she read each day?

A 42
B 32
C 34
D 36

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Arqum from Nl Dalmia, Mumbai

Subject :IMO Class : Class 8

When simplified, (x^–1 + y^–1)^–1 is equal to ____.

A x + y
B
C x y
D

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NIVED PRAKASH NAIR from SARVODAYA, THIRUVANANTHAPURAM

Class : Class 8

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Anusha from LBS School , Kota

Subject :IMO Class : Class 10

The rationalising factor of is ____.

A
B
C
D

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getpoonam from kanakia international school, Mumbai

Subject :IMO Class : Class 8

Kunal walks 10 kilometres towards North. From there, he walks 6 kilometres towards South. Then, he walks 3 kilometres towards East. How far and in which direction is he with reference to his starting point?

A 5 kilometres West
B 5 kilometres North-east
C 7 kilometres East
D 7 kilometres West

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Aryan Swain from Kendriya Vidyalaya, Barimul, Kendrapara

Subject :IMO Class : Class 4

Yashika has a bag with 8 red marbles, 4 blue marbles, 5 green marbles and 9 yellow marbles all of the same size.
What fraction of marbles are not yellow?

A
B
C
D