5
Q:

Answer the following puzzle 

Additional Details

 

Answer:
Q:

At what time between 2 and 3 O'clock, the hands of a clock coincide ?

A) 1 10/11 minutes past 2 B) 1 10/11 minutes past 3
C) 1 11/10 minutes past 3 D) 11 10/11 minutes past 2
 
Answer & Explanation Answer: A) 1 10/11 minutes past 2

Explanation:

Since, in one hour, two hands of a clock coincide only once, so, there will be value.
Required time  minutes past H.
Here H - initial position of hour hand = 2 (since 2 O'clock)
A° = Required angle = 0° (Since it coincides)

 minutes past 2 

=>  minutes past 2

 

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3 30
Q:

A clock is started at 11 a.m. By 600 seconds past 6 p.m, the hour hand has turned through ?

A) 155 degrees B) 175 degrees
C) 205 degrees D) 215 degrees
 
Answer & Explanation Answer: D) 215 degrees

Explanation:

The total angle traced by the hour hand is the angle traced in 7 hours and 10 minutes.
We know that the angle traced by the hour hand in one hour is 30º and in one minute is 1/2º.
Therefore, (30º x 7) + (10 x 1/2º) = 215º is the angle traced by the hour hand.

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4 42
Q:

If a Siren sounds for every 5 seconds, how many times will it sound in ¾ of an hour?

A) 541 times B) 540 times
C) 450 times D) 275 times
 
Answer & Explanation Answer: A) 541 times

Explanation:

There are 60 minutes in an hour.
In ¾ of an hour there are (60 × ¾) minutes = 45 minutes.
In ¾ of an hour there are (60 × 45) seconds = 2700 seconds.
Siren sounds for every 5 seconds.
In 2700 seconds  = 540 times.

The count start after the first sound, the Siren will sound 541 times in ¾ of an hour.

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2 81
Q:

Calculate the angle between the two hands of clock when the clock shows 4 : 20 p.m. ?

A) 5 degrees B) 10 degrees
C) 15 degrees D) 25 degrees
 
Answer & Explanation Answer: B) 10 degrees

Explanation:

Since at 4 : 20 the minute hand will be at 4 and the angle between them will be same as the distance covered in degree by the hour hand in 20 minutes.

Required angle = distance of hour hand = speed × time = × 20 =10 degrees.

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2 115
Q:

Answer the following puzzle

Answer

6:45


Explanation: As you move from left to right, add 1 to the value of each digit on the watch, and rotate the digits one place to the left.

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