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Q1. What is the smalllest no. by which 392 must be multiplied  so that the product is a perfect cube? 

(a) 2

(b) 7 

(c) 3

(d) none

Q2. What is the smallest number by which 3087 must be divided so that it become a perfect cube.

Q3. Which of the following is not perfect cube? 

Q4. The unit digit of the cube of 31 is 

Q5. Cube is 3.1 is 

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