Between 2 o'clock to 10 o'clock, how many times the hands of a clock are at right angle?

Options

A. 14
B. 12
C. 16
D. 15

Explanation

To solve the problem of how many times the hands of a clock are at right angles between 2 o'clock and 10 o'clock, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Clock Angles**:
The angle between the hour and minute hand of a clock can be calculated using the formula:
\[
\text{Angle} = |30H - 5.5M|
...