**Q.1: The cube of 4 is _________.**

a) 16

b) 64

c) 12

**Q.2: Which of the following is the smallest Hardy-Ramanujan number ?**

a) 1774

b) 1724

c) 1729

**Q.3: The smallest number by which 135 must be divided, in order to get a perfect cube is ____________.**

a) 4

b) 3

c) 5

**Q.4: Numbers obtained when a number is multiplied by itself three times is known as ________ numbers.**

a) cube

b) square

c) none

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**Q.5: Is 243 a perfect cube ?**

a) Yes

b) No

c) Can’t say

**Q.6: Which is the smallest three-digit perfect cube number ?**

a) 125

b) 100

c) 343

**Q.7: What will be the unit digit of a number having ‘3’ at its ones place ?**

a) 9

b) 7

c) 3

**Q.8: 729 is the cube of _____.**

a) 8

b) 6

c) 9

**Q.9: Which of the following is true for any natural number ?**

a) square of ‘a’ is greater than cube of ‘a’

b) square of ‘a’ is lesser than cube of ‘a’

c) square of ‘a’ is equal to cube of ‘a’

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**Q.10: What is the volume of a cube whose edge is 5 cm ?**

a) 125

b) 250

c) 300

**Q.11: How many zeroes will be there in the cube of 40 ?**

a) two

b) three

c) four

**Q.12: Which of the following smallest number has to be multiplied with 675 in order to get a perfect cube ?**

a) 3

b) 7

c) 5

**Q.13: The cube root of 0.027 is _________**

a) 0.3

b) 0.03

c) 0.003

**Q.14: The one’s digit of the cube of 888 is _________.**

a) 2

b) 8

c) 6

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**Q.15: Each prime factor appears ________ times in its cubes.**

a) two

b) three

c) four

**Q.16: The smallest number which has to be multiplied with 392 in order to get a perfect cube is __________.**

a) 2

b) 5

c) 7

**Q.17: The cube of even numbers is always _________.**

a) even

b) odd

c) both

**Q.18: The cube of 11 is __________.**

a) 1331

b) 1221

c) 1111

**Q.19: Figures which have three-dimensions are called _______ figures.**

a) perfect

b) solid

c) regular

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**Q.20: Check whether 27000000 is a perfect cube or not ?**

a) Yes, it is a perfect cube

b) No, it is not a perfect cube

c) Can’t say

**Answers:**

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- b
- c
- c
- a
- b
- a
- b
- c
- b
- a
- b
- c
- a
- a
- b
- c
- a
- a
- b
- a

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