Given below are two pairs of statement . Combine these two statement using " if and only if "
(i) p : If a rhombus is a square , then all its angles are `90^@`
q : If all the angles of a rhombus are `90^@` , then it is sqaure
(ii) p : If the sum of digit of a number is divisble by 9 , then the number is divisble by 9
q : If a number is divisble by 9 , then the sum of its digit is divisble by 9

Explanation

To combine the given pairs of statements using "if and only if," we can follow these steps:

### Step 1: Understand the Statements
We have two pairs of statements:
1. **Pair 1:**
- Statement P: If a rhombus is a square, then all its angles are \(90^\circ\).
- Statement Q: If all the angles of a rhombus are \(90^\circ\), then it is a square.

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