Playing With Numbers (IMO- Mathematics Olympiad (SOF) Class 8): Questions 9 - 15 of 61

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Question number: 9

» Playing With Numbers

MCQ▾

Question

The largest natural number by which the product of three consecutive even natural numbers is always divisible is________.

Choices

Choice (4) Response

a.

96

b.

28

c.

48

d.

18

Question number: 10

» Playing With Numbers

MCQ▾

Question

If , where A and B are single digit number such that, then the values of A and B are________.

Choices

Choice (4) Response

a.

4,5

b.

4,4

c.

5,5

d.

None of the above

Question number: 11

» Playing With Numbers

MCQ▾

Question

If , where A and B are single digit number such that, then the values of B and A are________.

Choices

Choice (4) Response

a.

4,5

b.

5,4

c.

6,9

d.

9,6

Question number: 12

» Playing With Numbers

MCQ▾

Question

The least value must be given to x so that the number 3128x4 is divisible by 8 is________.

Choices

Choice (4) Response

a.

1

b.

3

c.

4

d.

2

Question number: 13

» Playing With Numbers

MCQ▾

Question

If a 3-digit number ‘abc’ is divisible by 11, then________.

Choices

Choice (4) Response

a.

is a multiple of 11

b.

is a multiple of 11

c.

is a multiple of 11

d.

is a multiple of 11

Question number: 14

» Playing With Numbers

MCQ▾

Question

A 3 digit number ‘cba’ is divisible by 9 if________.

Choices

Choice (4) Response

a.

a + b + 2c is divisible by 9

b.

a + 2b + c is divisible by 9

c.

a + b + c is divisible by 9

d.

2a + b + c is divisible by 9

Question number: 15

» Playing With Numbers

MCQ▾

Question

If is divisible by 9, where is a digit less than 5, then the values of are________.

Choices

Choice (4) Response

a.

2

b.

3

c.

1

d.

0

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