Question

In one day the hour hand and minute hand how many times make right angles??

Answer 1

In a clock the right angles are made at 12 and 3, 3 and 6, 6 and 9 and 9 and 12
So it becomes 4 right angles
And considering the time zone a day has those are two (AM and PM)
There are two hands that make a right angle

Therefore it is

4 × 2 × 2 = 16

In a day the hour and the minute hand make a right angle for sixteen times