Q. At what time between 6 O' clock and 7 O' clock will be hands of a clock be at right angle?

• A. 49 1/11 min past 6 and 16 4/11 min past 6
• B. 50 1/11 min past 6 and 16 4/11 min past 6
• C. 47 1/11 min past 6 and 42 1/11 min past 6
• D. 47 1/11 min past 6 and 16 4/11 min past 6

Correct Answer: A