Clock Puzzle 3 (With Answers)

Puzzle 1: How many times in a day, the hands of a clock are straight?

A. 22      B. 44     C. 24     D. 48

Answer: 44

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

In 24 hours, the hands coincide or are in opposite direction 44 times a day.

Puzzle 2: At 3.40, the hour hand and the minute hand of a clock form an angle of?

A. 120°     B. 130°     C. 125°     D. 135°

Answer: 130°

Explanation: Angle traced by hour hand in 12 hrs = 360°

Angle traced by it in 11/3 hrs = (360/12) * (11/3) = 100°.

Angle traced by minute hand in 60 mm = 360°.

Angle traced by it in 40 mm = (360/60) * 40 = 240°.

Required angle = (240 - 110)° = 130°.

Puzzle 3: How many times do the hands of a clock coincide in a day?

A. 24     B. 21     C. 20     D. 22

Answer: 22

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 4: What time does the last watch indicate?

Answer: 11:01

Explanation: Taking the hour and minute values on each watch separately, as you move to the right the hour value increases by 1, 2, 3 and 4, and the minute value decreases by 11, 22, 33 and 44.

Puzzle 5: What time does the last watch indicate?

Answer: 8:00

Explanation: On each watch, the sum of the digits shown equals 8.