• # question_answer How many times do the hands of a clock coincide in a day? A)  11                              B)  12           C)  24                  D)  22

As we know that the hands of a clock coincide once in every hour. So, in a period of 12 hours, the hands of a clock are concide with each other = 11 times [$\because$Between 11 O' clock and 1 o' clock they concide only once] So, the hands of a clock are concide with each other in a day i.e. in 24 hours $=11\times 2=22$times