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Q:

# A watch which gains uniformly ,is 5 min,slow at 8 o'clock in the morning on sunday and it is 5 min 48 sec.fast at 8 p.m on following sunday. when was it correct?

 A) 7pm on wednesday B) 20 min past 7pm on wednesday C) 15min past 7pm on wednesday D) 8pm on wednesday

Answer:   B) 20 min past 7pm on wednesday

Explanation:

This sunday morning at 8:00 AM, the watch is 5 min. Slow, and the next sunday at 8:00PM it becomes 5 min 48 sec fast.  The watch gains $5+54860$ min in a time of  (7×24)+12 = 180 hours.

To show the correct time, it has to gain 5 min.

$545min→180hours$

5min ->

$5542×180$

$8313hrs=72hrs+1113hrs=3days+11hrs+20min$

So the correct time will be shown on wednesday at 7:20 PM

Q:

A clock shows 2 am now Find the total rotation of the minute hand, in degrees, of the clock when it will show 9 pm on the same night?

 A) 8600° B) 6840° C) 6470° D) 5930°

Explanation:

26 2324
Q:

What will be the measure of the acute angle formed between the hour hand and the minute hand at 6:43 a.m.?

 A) 21.5 deg B) 78 deg C) 56 deg D) 56.5 deg

Explanation:

17 2071
Q:

A watch gains 5 seconds per minute and was set right at 6 A.M. What would be the time shown on the watch when the correct time is 2 PM?

 A) 2.20 PM B) 2.50 PM C) 2.30 PM D) 2.40 PM

Explanation:

12 2449
Q:

What would be the smaller of the two angles formed by the hour hand and the minute hand at 3:47 p.m?

 A) 168.5 deg B) 162 deg C) 166.5 deg D) 165 deg

Explanation:

8 2237
Q:

A watch shows 6 p.m. where the hour hand points east. In which direction is the minute hand facing when the time is 9.15 p.m?

 A) West B) South C) East D) North

Explanation:

15 2838
Q:

What fraction of 2 hours is 12 seconds?

 A) 1/200 B) 1/300 C) 1/400 D) 1/600

Explanation:

13 1858
Q:

Three clocks are designed to alarm in every hour, two hours and three hours respectively. If they all alrmed together three hours before, then after how many hours will they next alarm together?

 A) 3 hours B) 6 hours C) 2 hours D) 1 hour

Explanation:

10 1759
Q:

In a week, how many times are the hands of a clock at right angles with each other?

 A) 308 B) 44 C) 24 D) 154