Taking the set of natural numbers as the universal set, write down the complements of the following sets:
(i) {x : x is an even natural number}
(ii) { x : x is an odd natural number }
(iii) {x : x is a positive multiple of 3} (iv) { x : x is a prime number }
(v) {x : x is a natural number divisible by 3 and 5}
(vi) { x : x is a perfect square } (vii) { x : x is a perfect cube}
(viii) { x : x + 5 = 8 }(ix) { x : 2x + 5 = 9}
(x) { x : x ≥ 7 }(xi) { x : x ∈ N and 2x + 1 > 10 }

Explanation

To find the complements of the given sets with the universal set being the set of natural numbers (N), we will follow these steps for each part:

### Solution Steps:

1. **(i)** Set: {x : x is an even natural number}
- Complement: {x : x is an odd natural number}

2. **(ii)** Set: {x : x is an odd natural number}
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