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- Question
Find at what time between 8 and 9 o'clock will the hands of a clock be in the same straight line but not together ?
Options- A. 100/11 min past 8
- B. 120/11 min past 8
- C. 90/11 min past 8
- D. 80/11 min past 8
- Correct Answer
- 120/11 min past 8
ExplanationIn this type of problems the formulae is
x is replaced by the first interval of given time Here i.e 8
= min
Therefore the hands will be in the same straight line but not
together at min.past 8. - 1. The reflex angle between the hands of a clock at 10.25 is
Options- A. 197 1/2
- B. 167 1/2
- C. 157 1/2
- D. 187 1/2 Discuss
- 2. How much does a watch lose per day, if its hands coincide ever 64 minutes?
Options- A. 32 8/11
- B. 33 8/11
- C. 34 8/11
- D. 35 8/11 Discuss
- 3. At what time between 7 and 8 o'clock will the hands of a clock be in the same straight line but,not together?
Options- A. (5 + 5/11 )min past 7
- B. (6 + 5/11) min past 7
- C. 7
- D. 8 Discuss
- 4. The angle between the minute hand and the hour hand of a clock when the time is 8:30
Options- A. 80 Degrees
- B. 75 Degrees
- C. 60 Degrees
- D. 105 Degrees Discuss
- 5. A watch which gains 5 seconds in 3 minutes was set right at 7 a.m. In the afternoon of the same day, when the watch indicated quarter past 4 o'clock, the true time is:
Options- A. 4pm
- B. 5pm
- C. 6pm
- D. 7pm Discuss
- 6. At what time between 5.30 and 6 will the hands of a clock be at right angles?
Options- A. (43 + 5/11) min past 5
- B. (43 + 7/11) min pats 5
- C. 5
- D. 7 Discuss
- 7. What time between 4 and 5 o'clock will the hands of a clock be at rightangle?
Options- A. 3 5/11
- B. 4 5/11
- C. 5 5/11
- D. 6 5/11 Discuss
- 8. 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 Discuss
- 9. A watch gains 5 seconds in 3 minutes and was set right at 8 AM. What time will it show at 10 PM on the same day ?
Options- A. 10 : 27 : 41 AM
- B. 8 : 51 : 04 AM
- C. 9 : 45 : 15 PM
- D. 10 : 23 : 20 PM Discuss
- 10. How many minutes does a watch lose per day, if its hands coincide every 64 minutes ?
Options- A. 36 7/9 min
- B. 32 8/11 min
- C. 34 3/11 min
- D. 65 5/11 min Discuss
Search Results
Correct Answer: 197 1/2
Correct Answer: 32 8/11
Explanation:
55min spaces are covered in 60min
60 min. spaces are covered in (60/55 x 60) min= 65+5/11 min.
loss in 64min=(65+5/11)- 64 =16/11
Loss in 24 hrs (16/11 x 1/64 x 24 x 60) min= 32 8/11.
Correct Answer: (5 + 5/11 )min past 7
Correct Answer: 75 Degrees
Explanation:
Angle traced by hour hand in 17/2 hrs = = 255
Angle traced by min hand in 30 min = = 180
Therefore, Required angle = (255 - 180) =
Correct Answer: 4pm
Correct Answer: (43 + 7/11) min pats 5
Explanation:
At 5 o'clock, the hands are 25 min. spaces apart.
To be at right angles and that too between 5.30 and 6, the minute hand has to gain (25 + 15) = 40 min. spaces.
55 min. spaces are gained in 60 min
40 min. spaces are gained in min
Correct Answer: 5 5/11
Explanation:
this type of problems the formulae is
(5*x + or -15)*(12/11)
Here x is replaced by the first interval of given time
here i.e 4
Case 1 : (5*x + 15)*(12/11)
(5*4 +15)*(12/11)
(20+15)*(12/11)
35*12/11=420/11=38 2/11 min.
Therefore they are right angles at 38 2/11 min .past4
Case 2 : (5*x-15)*(12/11)
(5*4-15)*(12/11)
(20-15)*(12/11)
5*12/11=60/11 min=5 5/11min
Therefore they are right angles at 5 5/11 min.past4.
Correct Answer: 2 p.m on Wednesday
Explanation:
Time from 12 p.m on monday to 2 p.m on the following monday = 7 days 2 hours = 170 hours
Therefore, The watch gains min. or 34/5 min. in 170 hrs.
Now, 34/5 min. are gained in 170 hrs.
Therefore, 2 min are gained in hrs = 50 hrs
Therefore, 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.
Correct Answer: 10 : 23 : 20 PM
Explanation:
The watch gains 5 seconds in 3 minutes = 100 seconds in 1 hour.
From 8 AM to 10 PM on the same day, time passed is 14 hours.
In 14 hours, the watch would have gained 1400 seconds or 23 minutes 20 seconds.
So, when the correct time is 10 PM, the watch would show 10 : 23 : 20 PM
Correct Answer: 32 8/11 min
Explanation:
55 min. spaces are covered in 60 min. 60 min. spaces are covered in (60x60/55)min. Loss in 64 min. = ((65x5/11) - 64) = 16/11 min. Loss in 24 hrs = (16x1x 24 x 60)/(11x64) min. = 32 8/11 min
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