Powers and Roots Practice Test 5

Question : 21 of 31

Marks: +1, -0

By what least number 3,888 be multiplied to obtain a number which is a perfect cube?

Solution:

The factors of 3,888 are

2^3×3^3×3^2×2 .

So, to make it a perfect cube, we need tomultiply it by

3×2^2=3×4=12 .

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