Which of the following are perfect cubes? (I)64            (ii) 216                    (iii) 243

Explanation

To determine which of the given numbers are perfect cubes, we will factor each number into its prime factors and check if all prime factors can be grouped into triplets.

### Step-by-Step Solution:

**Step 1: Check if 64 is a perfect cube.**
- Start by finding the prime factors of 64.
- Divide 64 by 2:
- \( 64 \div 2 = 32 \)
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