Number Systems (IMO- Mathematics Olympiad Class 6): Questions 45 - 51 of 84

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Question number: 45

» Number Systems

MCQ▾

Question

There are 378 red cards in box. A boy takes out 9 red cards from it and replaces them by 14 blue cards. He continues to do so, till all red cards are replaced by blue cards. Find the number of blue cards put in the box?

Choices

Choice (4) Response

a.

438

b.

658

c.

588

d.

348

Question number: 46

» Number Systems

MCQ▾

Question

Cube of any negative integer is

Choices

Choice (4) Response

a.

0

b.

Negative

c.

Depend on the nature of integer

d.

Positive

Question number: 47

» Number Systems

MCQ▾

Question

If positive sign precedes a bracket the sign of the terms inside the bracket will ________ when the bracket is removed.

Choices

Choice (4) Response

a.

Change

b.

Be 0

c.

Depends on the bracket

d.

Not change

Question number: 48

» Number Systems

MCQ▾

Question

If a, b and c are whole numbers such that a = b and c 0 and c > 0, then

Choices

Choice (4) Response

a.

a×c<b×c

b.

a×c>b×c

c.

a×c=b×c

d.

None of the above

Question number: 49

» Number Systems

MCQ▾

Question

Product of two integers is -96. If one of the integers is -8, then the other is

Choices

Choice (4) Response

a.

12

b.

- 14

c.

0

d.

15

Question number: 50

» Number Systems

MCQ▾

Question

The integer which is 7 more than [(6)(3)] is

Choices

Choice (4) Response

a.

2

b.

4

c.

4

d.

16

Question number: 51

» Number Systems

MCQ▾

Question

Rohan’s monthly salary is Rs. 18000. He spends Rs. 2050 for his home expenses, Rs. 1590 for purchasing clothes, Rs. 870 for purchasing groceries, milk, etc. , Rs. 1900 for purchasing medicine and pays a rent of Rs. 4500 in a particular month. How much does he save in this month?

Choices

Choice (4) Response

a.

Rs. 7090

b.

Rs. 8609

c.

Rs. 7050

d.

Rs. 6870

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