Question

By writing prime factorisation of a (i) 54 (ii) 512 (iii) 625 (iv) 1029 (v) 2744 (vi) 5832 - (vii) 9261 (viii) 10125 2. Find the smallest number by which 8192 must be divided so that the quotient obtained is a perfect cube. 3. Is 392 a perfect cube? If not, find the smallest number by which 392 must be multiplied so that th product obtained is a perfect cube. 4. Is 53240 a perfect cube? Ifnot, find the smallest number by which 53240 must be multiplied so t the product obtained is a perfect cube. Is 1188 a perfect cube? If not, find the smallest number by which 1188 must be divided so that quotient obtained is a perfect cube. 6. Check which of the following are perfect cubes: (i) 2700 (ii) 16000 (iii) 64000 (iv) 900 (v) 125000 (vi) 3600 (vii) 21600 (viii) 100 (ix) 27000000 (x) 1000 What pattern do you observe in these perfect cubes. 7. Rajendra makes a cuboid of plasticine of sides 5 cm, 2 cm, 5 cm. How many such cuboid are needed to form a cube. a MY MAT​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

The correct option is A 3

Prime factorization of 10125 gives

10125

=

5

×

5

×

5

×

3

×

3

×

3

×

3

By grouping them in triplets, clealy, 10125 must be divided by 3 in order to make it perfect cube.

answer is 4