How many times are the hands of a clock at right angle in 6 hours?	Choose the correct choice from the following options:
A) 9	B) 10	C) 11	D) 12	E) 13
In 12 hours, they are at right angles 22 times.   In 6 hours, they are at right angles 11 times. Answer: Option 11
<result>C</result>
How many times are the hands of a clock at right angle in 6 hours?