Find the smallest number exactly divisible by 12, 15,20 and 27

Explanation

To find the smallest number exactly divisible by 12, 15, 20, and 27, we need to calculate the Least Common Multiple (LCM) of these numbers. Here’s a step-by-step solution:

### Step 1: Prime Factorization
First, we will find the prime factorization of each number.

- **12**:
- \(12 = 2^2 \times 3^1\)

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