Question

find the least number by which each of the following numbers must be multiplied to obtain a perfect cube. write cube root of the number so obtained
1:-1944​

Answer 1

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Solution:

(i) Prime factors of 243 = (3 × 3 × 3) × 3 × 3

Here, two 3s are left which are not in a triplet. To make 243 a cube, one more 3 is required.so, we multiply 243 by 3 to make it a perfect cube.