Question

Maths homework:
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​

Answer 1

Answer:

Step-by-step explanation:

Third one is correct .

8 will be the digit

7 will be the digit

6 will be the digit

4 will be it's side as 4×4×4=64

343 is the correct cube of 7

First one is correct

-9 is equal to it's own cube

30 will be it's cube root as 30×30×30=27000

-4/7 is the cube root of -64/243.

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Answer 2

Answer:

1) b

2) d

3) c

4) a

5) b

6) c

7) a

8) a

9) a

10) d

Step-by-step explanation:

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