Which of the following pairs of sets are equals? Give reasons.
(i) A={x:x is a letter of word FOWL}
B={x:x is a letter of word WOLF}
(ii) `A=phi and B={x:x in N and 3x^(2)+3 lt 3}`
(iii) `A={M,A,N}, B={W,O,M,A,N}`

Explanation

To determine which pairs of sets are equal, we will analyze each pair separately.

### Step 1: Analyze the first pair of sets
Given:
- \( A = \{ x : x \text{ is a letter of the word FOWL} \} \)
- \( B = \{ x : x \text{ is a letter of the word WOLF} \} \)

**Solution:**
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