The mid-value of a class interval is 42. If the class size is 10, then the upper and lower limits of the class are: 47 and 37                      (b)  37 and 47 37.5 and 47.5                (d)  47.5 and 37.5

Explanation

To find the upper and lower limits of a class interval when the mid-value and class size are given, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Mid-value and Class Size:**
- Given mid-value = 42
- Given class size = 10

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