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- Question
A watch which gains uniformly is 2 minutes low at noon on Monday and is 4 min. 48 sec fast at 2 p.m. on the following Monday. When was it correct?
Options- A. 2 p.m. on Tuesday
- B. 2 p.m. on Wednesday
- C. 3 p.m. on Thursday
- D. 1 p.m. on Friday
- Correct Answer
- 2 p.m. on Wednesday
ExplanationTime from 12 p.m. on Monday to 2 p.m. on the following Monday = 7 days 2 hours = 170 hours.
The Watch gains min. or min.in 170 hrs.
Now, min.are gained in 170 hrs.
2 min.are gained in hrs=50 hrs
Watch is correct 2 days 2 hrs. after 12 p.m. on Monday i.e., it will be correct at 2 p.m. on Wednesday
- 1. A clock is started at noon. By 10 minutes past 5, the hour hand has turned through:
Options- A. 145
- B. 150
- C. 155
- D. 160 Discuss
- 2. How many times in a day, are the hands of a clock in straight line but opposite in direction?
Options- A. 20
- B. 22
- C. 24
- D. 48 Discuss
- 3. At 3.40, the hour hand and the minute hand of a clock form an angle of:
Options- A. 120 degrees
- B. 125 degrees
- C. 130 degrees
- D. 135 degrees Discuss
- 4. What is two days after the day after the day before yesterday? 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. 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
- 7. 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
Clock Puzzles problems
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Correct Answer: 155
Explanation:
Angle traced by hour hand in 12 hrs = 360º.
Angle traced by hour hand in 5 hrs 10 min. i.e., 31/6 hrs = = 155º
Correct Answer: 22
Explanation:
The hands of a clock point in opposite directions (in the same straight line) 11 times in every 12 hours. (Because between 5 and 7 they point in opposite directions at 6 o'clcok only).
So, in a day, the hands point in the opposite directions 22 times.
Correct Answer: 130 degrees
Explanation:
Angle traced by hour hand in 12 hrs. = 360º.
Angle traced by it in 11/3 hrs= =
Angle traced by minute hand in 60 min. = 360º.
Angle traced by it in 40 min. =(360/60*40) =240
Required angle (240 - 110)º = 130º.
Correct Answer: Tomorrow The day before yesterday was two days ago; the day after the day before yesterday was yesterday; two days after that (yesterday) is tomorrow
Correct Answer: Twenty-six minutes
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: 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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