1 .	By what least number should 675 be multiplied to obtain a number which is a perfect cube ?
[ A ]    5 [ B ]    6 [ C ]    7 [ D ]    8
Answer : Option A Explanation : 675 = 3 × 3 × 3 × 5 × 5 Required number to make it a perfect cube = 5 675 × 5 = 3375 = (15)$^ 3$
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