State whether a given pair of terms is of like or unlike terms.
(i) `1,100` (ii) `-7x, 5/2x` (iii) `-29x , 29y` (iv) `14xy, 42yx`

Explanation

To determine whether the given pairs of terms are like or unlike terms, we need to analyze each pair based on their coefficients and variables. Like terms are terms that have the same variable raised to the same power, while unlike terms do not.

Let's go through each part step by step:

### Step 1: Analyze the first pair of terms: `1, 100`
- Both terms are constants (numbers without variables).
- Since they are both just numbers, they can be considered like terms.

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