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  1. The least possible value of A for which 90 × A is a perfect cube is
    1. 200
    2. 300
    3. 500
    4. 600
Correct Option: D

The number = 90 × A
= 3 × 3 × 2 × 5 × A
The least value of A for which the given number is a perfect cube
= 3 × 22 × 52
= 3 × 4 × 25 = 300


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