(i)       Express 49 as the sum of 7 odd numbers.(ii)       Express 121 as the sum of 11 odd numbers.

Explanation

### Step-by-Step Solution

**(i) Express 49 as the sum of 7 odd numbers.**

1. **Identify the number of odd numbers needed**: We need to express 49 as the sum of 7 odd numbers.

**Hint**: Remember that the sum of the first \( n \) odd numbers is equal to \( n^2 \).

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