**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.