An integer is chosen between 70 and 100, Find the probability that it is.
(a) a prime number
(b) divisible by 7

Explanation

To solve the problem, we need to find the probability of two events: (a) selecting a prime number and (b) selecting a number that is divisible by 7, from the integers between 70 and 100.

### Step-by-Step Solution:

1. **Identify the Range of Integers**:
The integers we are considering are from 70 to 100, inclusive.
- The total integers in this range can be calculated as:
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