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- Question
At what time between 2 and 3 O'clock, the hands of a clock coincide ?
Options- 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
- Correct Answer
- 1 10/11 minutes past 2
ExplanationSince, 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
- 1. Minute hand overlaps hour hand in 65 mins. In how many days it will gain 1440 hours ?
Options- A. 57 days
- B. 58 days
- C. 60 days
- D. 61 days Discuss
- 2. 1 Billion Seconds Equals to
Options- A. 34.76 years
- B. 32.48 years
- C. 33.31 years
- D. 31.68 years Discuss
- 3. Calculate the angle between the two hands of clock when the clock shows 4 : 20 p.m. ?
Options- A. 5 degrees
- B. 10 degrees
- C. 15 degrees
- D. 25 degrees Discuss
- 4. Find at what time between 9 and 10 o?clock will the hands of a clock be in 180° ?
Options- A. 180/14 min past 10
- B. 180/11 min past 9
- C. 148/7 min past 10
- D. 154/11 min past 9 Discuss
- 5. How many minutes is it until six o?clock if fifty minutes ago it was four times as many minutes past three o?clock? Discuss
- 6. The reflex angle between the hands of a clock at 11:35 is ?
Options- A. 137.5 degrees
- B. 222.5 degrees
- C. 192.5 degrees
- D. 330 degrees Discuss
- 7. A clock is started at 11 a.m. By 600 seconds past 6 p.m, the hour hand has turned through ?
Options- A. 155 degrees
- B. 175 degrees
- C. 205 degrees
- D. 215 degrees Discuss
- 8. There is a clock which shows false timing ie it shows 20 minutes less for each 1 hour. If the clock shows 12 noon now how many minutes will be lost when it shows 2 pm ?
Options- A. 36 minutes
- B. 48 minutes
- C. 35 minutes
- D. 60 minutes Discuss
- 9. How many minutes is it until 6 o'clock if 50 minutes ago it was 4 times as many minutes past 3 o'clock ?
Options- A. 26 min
- B. 24 min
- C. 22 min
- D. 20 min Discuss
- 10. If a Siren sounds for every 5 seconds, how many times will it sound in ¾ of an hour?
Options- A. 541 times
- B. 540 times
- C. 450 times
- D. 275 times Discuss
Clock Puzzles problems
Search Results
Correct Answer: 60 days
Explanation:
In this problem , it has considered that 65 mins = 1hr
So mins has increased by 5 mins so multiply 5 x 24 = 120 mins extra ,
That is now per day it adds 2hr extra, so divide 1440/26 = 59.384 days =~ 60 days.
Correct Answer: 31.68 years
Explanation:
We know that 1 year = 365.25 days
1 day = 24 hours
1 hour = 60 minutes
1 minute = 60 seconds
=> 1 Year = 365.25 x 24 x 60 x 60 Seconds
But 1 billion seconds = ?
1 Year = 365.25 x 24 x 60 x 60 Seconds
? = 1000000000 Seconds
= 31. 68 years.
Correct Answer: 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.
Correct Answer: 180/11 min past 9
Explanation:
At 9 o?clock, the hour hand is at 9 and the minutes hand is at 12, i.e., the two hands are 15 min. spaces apart.
So, the minute hand should gain = (30 - 15) minutes = 15 minutes
55 minutes will be gained in 60 min.
15 minutes spaces will be gained in ((60/55) x 15) min. = 180/11 min.
The hands will be in the same straight line but not together i.e.,in 180 degrees at 180/11 min. past 9.
Correct Answer: Twenty-six minutes
Correct Answer: 222.5 degrees
Explanation:
Apply the formula for finding the angle:
Angle=(30h-(11/2)m( where m stands for minutes and h stands for hours)
Hence, 30x11 - 11/2x35 = 330 - 192.5 = 137.5 degrees
The reflex angle = 360 - 192.5 degree = 222.5 degrees.
Correct Answer: 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.
Correct Answer: 60 minutes
Explanation:
For 1 hour, 20 minutes is slower, then for
06 miuntes - 2 minutes is slower
30 minutes - 10 minutes
Actual time | false time
12 12
01 PM 12:40 PM (20 minutes slower)
02 PM 01:20 PM
03 PM 02:00 PM
So, when actual time is 3pm, the false time is 2 pm.
So, it loses 60 minutes when it shows 2 pm.
Correct Answer: 26 min
Explanation:
Let the required number of minutes = M
Total minutes between 3o'clock and 6o' clock = 180 minutes
M + 50 + 4M = 180
5M + 50 = 180
5M = 130
M = 26 minutes.
Correct Answer: 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 = 2700/5 = 540 times.
The count start after the first sound, the Siren will sound 541 times in ¾ of an hour.
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