# Clock Puzzle 5 [With Answers]

Puzzle 1: How many times do the hands of a clock coincide in a day?

A.) 20   B.) 21

C.) 22   D.) 24

Explanation: The hands of a clock coincide 11 times in every 12 hours

(Since between 11 and 1, they coincide only once, i.e. at 12 o’clock).

==> The hands coincide 22 times in a day.

Puzzle 2: How many times are the hands of a clock at right angles in a day?

A.) 22   B.) 44

C.) 38   D.) 48

Explanation: In 12 hours, they are at right angles 22 times.

==> In 24 hours, they are at right angles 44 times.

Puzzle 3: How much does a watch lose per day, if its hands coincide every 64 minutes?

A.) 32 8/11min            B.) 36 5/11min

C.) 90min        D.) 96min

Explanation: 55 min. spaces are covered in 60 min.

60 min spaces are covered in (60/55 * 60) min = 65 5/11 min

Loss in 64 min = (65 5/11- 64) = 16/11 min

Loss in 24 hrs = (16/11 * 1/64 * 24 * 60) min

= 32 8/11 min

Puzzle 4: How many times in a day the hands of a clock are straight?

A.) 22   B.) 21

C.) 43   D.) 44

Explanation: In 12 hours, the hands coincide or are in opposite direction 22 times.

In 24 hours, they are at right angles 22 times.

Puzzle 5: At what time between 4 & 5 will the hands of a watch point in opposite directions?

A.) 43 min past 4         B.) 42 5/11 min past 4

C.) 50 4/11 min past 4            D.) 40 min past 4