What is the least possible number which must be added to 4722 so that it becomes divisible by 21, 25, 27 and 35 ?

Explanation

To solve the problem of finding the least possible number that must be added to 4722 so that it becomes divisible by 21, 25, 27, and 35, we can follow these steps:

### Step 1: Find the LCM of the given numbers
First, we need to find the Least Common Multiple (LCM) of the numbers 21, 25, 27, and 35.

- **Prime Factorization**:
- 21 = 3 × 7
- 25 = 5 × 5 (or \(5^2\))
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