Playing With Numbers (IMO- Mathematics Olympiad Class 8): Questions 16 - 23 of 61

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 1029 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

Question number: 16

» Playing With Numbers

MCQ▾

Question

If +0ABCCA594 and there is no carry on addition, then the value of B is________.

Choices

Choice (4) Response

a.

0

b.

5

c.

3

d.

1

Question number: 17

» Playing With Numbers

MCQ▾

Question

If N divided by 5 leaves a remainder of 4, and N divided by 2 leaves a remainder of 1, then the one’s digit of N is________.

Choices

Choice (4) Response

a.

3

b.

4

c.

7

d.

9

Question number: 18

» Playing With Numbers

MCQ▾

Question

If 21x2+12x3 is divisible by 3, where x is a digit less than 5, then the values of x are________.

Choices

Choice (4) Response

a.

3

b.

1

c.

0

d.

2

Question number: 19

» Playing With Numbers

MCQ▾

Question

If +1ABCCA686 and there is no carry on addition, then the value of B is________.

Choices

Choice (4) Response

a.

3

b.

1

c.

5

d.

4

Question number: 20

» Playing With Numbers

MCQ▾

Question

The difference of the squares of two consecutive odd integer is divisible by which of the following integers?

Choices

Choice (4) Response

a.

7

b.

5

c.

8

d.

2

Question number: 21

» Playing With Numbers

MCQ▾

Question

A 5-digit number xy721 is divisible by 3 such that x + y < 5, where x and y are digits, then possible values of (x, y) are________.

Choices

Choice (4) Response

a.

(1, 1), (2, 0)

b.

(1, 2), (2, 0)

c.

(0, 2), (2, 0)

d.

(1, 1), (0, 2)

Question number: 22

» Playing With Numbers

MCQ▾

Question

A 4 digit number ‘abcd’ is divisible by 8 if________.

Choices

Choice (4) Response

a.

b + c + d is divisible by 8

b.

a + 2b + c + d is divisible by 8

c.

a + b + c is divisible by 8

d.

a + b + c + d is divisible by 8

Question number: 23

» Playing With Numbers

MCQ▾

Question

If a number has unit digit any of 0, 2, 4, 6, 8. Then it is divisible by________.

Choices

Choice (4) Response

a.

3

b.

2

c.

9

d.

5

Sign In