How many times are the hands of a clock at right angle in a day?  Pick one
A) 44
B) 21
C) 22
D) 41
E) 40
A   44   In 12 hours, they are at right angles 22 times.   In 24 hours, they are at right angles 44 times.
<result>A</result>
How many times are the hands of a clock at right angle in a day?