Cubes and Cube Roots-MCQ

1.   Which of the following is correct?

          I. Cube of a negative number is always positive.

         II. Cube of a negative number is always negative.

        III. Cube of a negative number may be positive or negative.

        IV. All of the above

2.   If the digit in one’s place of a number is 2, then the last digit of its cube will be:

          I. 2

         II. 4

        III. 6

        IV. 8

3.   If the digit in one’s place of a number is 3, then the last digit of its cube will be:

          I. 3

         II. 6

        III. 7

        IV. 9

4.   If the digit in one’s place of a number is 6, then the last digit of its cube will be:

          I. 6

         II. 3

        III. 2

        IV. 8

5.   The volume of a cubical box is 64 cm³. Which of the following is its side?

          I. 2 cm

         II. 4 cm

        III. 6 cm

        IV. 8 cm

6.   Which of the following is a perfect cube?

          I. 10000

         II. 243

        III. 343

        IV. 270000

7.   If a number is doubled then which of the following is a correct statement?

          I. Its cube is two times the cube of the given number.

         II. Its cube is three times the cube of the given number.

        III. Its cube is six times the cube of the given number.

        IV. Its cube is eight times the cube of the given number.

8.   Which of the following is equal to its own cube?

          I. -1

         II. -2

        III. -3

        IV. -9

9.   Which of the following is the cube root of 27000?

          I. 30

         II. 300

        III. 3000

        IV. None of these

10.   Which of the following is the cube root of -64/243?

          I. 7/4

         II. -7/4

        III. 4/7

        IV. -4/7

1.    II

2.    IV

3.    III

4.    I

5.    II

6.    III

7.    IV

8.     I

9.    I

10. IV