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- Question
- How many times in a day (24 Hrs) are the hands of a clock coincide?
Options- A. 20
- B. 22
- C. 24
- D. 48
- Correct Answer
- 22
Explanation22
- 1. At what time between 1'O clock and 2'O clock the hands of the clock are opposite to each other.
Options- A. 34(6/11) past 1'Oclock
- B. 38(2/11)past 1'Oclock
- C. 56(8/11)past 1'Oclock
- D. 64(9/11)past 1'Oclock Discuss
- 2. By how many degree does the minute hand move in the same time, in which the hour hand move by 28?
Options- A. 168
- B. 336
- C. 196
- D. 376 Discuss
- 3. At what time between 8 and 9 o'clock will the hands of a clock be at right angle?
Options- A. 8 : 163/11
- B. 8 : 273/11
- C. 8 : 173/11
- D. None of these Discuss
- 4. At what time between 9 and 10 o'clock will the hands of a clock be in the same straight line but not together?
Options- A. 9 :164/11
- B. 9 :154/11
- C. 9 :174/11
- D. None of these Discuss
- 5. Find the angle between minute hand and hour hand at 2 : 45
Options- A. 180°
- B. 190°
- C. 175°
- D. None of these Discuss
- 6. How many times in a day (24 Hrs) are the hands of a clock are in a straight line?
Options- A. 20
- B. 22
- C. 44
- D. 48 Discuss
- 7. How many times in a day (24 Hrs) are the hands of a clock are in a perpendicular to each other?
Options- A. 20
- B. 22
- C. 44
- D. 48 Discuss
- 8. A watch, which gains uniformly, is 2 min, slow at noon on Saturday, and is 4 min 48 seconds fast at 3 p.m on the following Sunday when was it correct?
Options- A. 2 : 00 pm on Tuesday
- B. 12 noon on Monday
- C. 2 : 00 am on Tuesday
- D. None of these Discuss
- 9. A clock is set at 10 a.m. The clock loses 16 minute in 24 hours. What will be the true time when the clock indicates 3 a.m. on 4th day?
Options- A. 9 p.m
- B. 10 p.m
- C. 11 p.m
- D. 12 p.m Discuss
- 10. A watch which gains uniformly is 2 minutes slow at noon on Sunday and is 4 min. 48 sec fast at 2 p.m. on the following Sunday. When it has shown the correct time?
Options- A. 2 : 00 p.m. on Monday
- B. 2 : 00 p.m. on Tuesday
- C. 3 : 00 p.m. on Wednesday
- D. 1 p.m. on Thrusday Discuss
Calendar problems
Search Results
Correct Answer: 38(2/11)past 1'Oclock
Explanation:
The minute hand to coincide with the hour hand it should trace at first 5 minute spaces and then the hands of the clocks to be opposite to each other minute hand should trace 30 minute spaces i.e. totally it should gain 5 + 30 = 35 minute spaces to be opposite to that of hour hand.
We know that, Minute hand gains 55 minute spaces over hour hand in 1 hour. Therefore, Minute hand gain 40 minute spaces over hand in 35 x (60/55) = 38(2/11).
Hence the hand of the clock will minutes be opposite to each at 38 (2/11) past 1'O clock. Therefore, Correct option is B.
Correct Answer: 336
Explanation:
28 x 2 x 6 = 336 degree
Correct Answer: 8 : 273/11
Explanation:
Consider exactly at 8 : 00, minute hand is at position '12' and hour hand is at '8' hence angle between these two hands at 8 : 00 is 240°.
Case (i) when minute hand is behind Hour hand then required time is (240 - 90)/(11/2) = 150/(11/2) = 300/11 = 27 3/11 minute
Case (ii) when minute hand is ahead of four hand then required time is (240 + 90)/(11/2) = 330/(11/2)
= 330 x 2/11 = 60 minute i.e., at 9 : 00 PM
Correct Answer: 9 :164/11
Explanation:
9 :164/11
Correct Answer: None of these
Explanation:
From the formula the required angle is 187.5°
Correct Answer: 44
Explanation:
In 12 hours both hands are in straight line (either coincides or in opposite direction) 22 times. Hence in 24 hours both hands are in straight line 44 times.
Correct Answer: 44
Explanation:
44
Correct Answer: 2 : 00 pm on Tuesday
Explanation:
From Sunday noon to the following Sunday at 2 p.m. there are 7 days 2 hours or 170 hours. The watch gains 2 + 44/5 min in 170 hrs. Therefor, the watch gains 2 min in 2 x 170 hrs i.e., 50 hours 64/5. Now 50 hours Sunday noon = 2 p.m on Tuesday.
Correct Answer: 11 p.m
Explanation:
Time from 10 a.m on a day to 3 a.m on 4th day = 24 x 3 + 17 = 89 hours.
Now 23 hrs 44 min. of this clock = 24 hours of correct clock.
89 hrs of faulty clock = (24 x 15/356 x 89) hrs = 90 hrs.
So, the correct time is 11 p.m
Correct Answer: 2 : 00 p.m. on Tuesday
Explanation:
Time from 12 p.m. on Sunday to 2 p.m. on the following Sunday = 7 days 2 hours.
= 24 x 7 + 2 = 170 hours.
The watch gain = (2 + 4 x 4/5) min = 34/5 minute in 170 hrs.
Since, 34/5 min are gained in 170 hrs.
2 min are gained in (170 x 5/34 x 2) hrs = 50 hours i.e., 2 days 2 hrs. after 12 p.m. on Sunday i.e., it will be correct at 2 p.m. on Tuesday.
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