A) 24
B) 16
C) 44
D) 48
E) None of these
Correct Answer: C
Solution :
Explanation Option [c] is correct. It is clear from the properties of the clock that both hands of a clock are at right angle twice in every hour, except at 3:00 o'clock and 9:00 the positions are identical. So, they are at right angle 22 times in 12 hrs. Thus, in 24 hrs they are \[22\times 2=44\] times at right angle.
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