MCQ Questions

Question No. 1

Fill in the blanks:

Answer :

(a) The cube of 1 is _______.

(b) The cube of 2 is ________.

(c) The cube of 7 is _________.

Question No. 2

True or False:

Answer :

(a) The cube root of 216 is 6.

(b) 8 is not a perfect cube.

(c) The cube root of 64 is 4.

Question No. 3

One word answer:

Answer :

(a) Is 648 a perfect cube?

(b) Is 27 a perfect cube?

(c) Is 1000 a perfect cube?

Question No. 4

Find the cube roots of the following numbers by prime factorisation method:

Answer :

(i) 1738

(ii) 729

(iii) –74088

(iv) –64/125

(v) 2.744

(iv) 216 × 125

Question No. 5

Find the value of:

Answer :

Question No. 6

Find the cube roots of the following:

Answer :

(i) 729 × 216

(ii) 2744/35937

(iii) 4*473/2197

(iv) 0.085184

(v) 216/343

Question No. 7

Which of the following expressions are polynomials?

Answer :

Question No. 8

Find the cubes of the following numbers :

Answer :

(i) 8

(ii) 13

(iii) 103

(iv) –4/9

(v) 3/5

(vi) 27

(vii) – 2.4

(viii) 0.001

Question No. 9

Evaluate:

Answer :

Question No. 10

Solve:

Question No. 11

Find the odd numbers to be added to get the following cubes :

Answer :

Question No. 12

Find the cube roots of the following :

Answer :

Question No. 13

What is the cube of 1?

Answer :

1

3

5

Question No. 14

What is the cube root of 8?

Answer :

1

2

8

Question No. 15

A natural number which can be expressed as a product of triplets of equal factors is known as a _______.

Answer :

perfect square

perfect cube

none of these

Question No. 16

The cube of 70 is _______________ .

Answer :

(i) 49,000

(ii) 4,90,000

(iii) 3,43,000

(iv) 34,300

Question No. 17

By which digit the cube of 27 ends?

Answer :

(i) 1

(ii) 2

(iii) 4

(iv) 3

Question No. 18

Cube of (2 – 1/3 ) is _______________.

Answer :

(i) 8 – 1/27

(ii) 125/27

(iii) 25/9

(iv) 343/47

Question No. 19

The smallest number by which 3645 be multiplied so that the product becomes a perfect cube is :

Answer :

(i) 5

(ii) 25

(iii) 15

(iv) 35

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