Discussion
Home ‣ Aptitude ‣ Calendar Comments
- Question
- 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
- Correct Answer
- 8 : 273/11
ExplanationConsider 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 - 1. 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
- 2. Find the angle between minute hand and hour hand at 2 : 45
Options- A. 180°
- B. 190°
- C. 175°
- D. None of these Discuss
- 3. Find the percentage change in angle between minute hand hour hand from 2 PM to 6 PM.
Options- A. 100
- B. 200
- C. 250
- D. None of these Discuss
- 4. Find the angle between minute hand and hour hand at 2 : 18 AM
Options- A. 37°
- B. 33°
- C. 39°
- D. None of these Discuss
- 5. At what time between 2 PM and 3 PM the angle between minute hand and hour hand is 100°.
Options- A. 2 : 46/11
- B. 2 : 126/11
- C. 2 : 186/11
- D. None of these Discuss
- 6. 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
- 7. 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
- 8. How many times in a day (24 Hrs) are the hands of a clock coincide?
Options- A. 20
- B. 22
- C. 24
- D. 48 Discuss
- 9. 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
- 10. 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
Calendar problems
Search Results
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: 200
Explanation:
At 2 PM angle between minute hand and hour hand is 60° and that at 6 PM is 180° hence percentage change is 200%.
Correct Answer: 39°
Explanation:
39°
Correct Answer: 2 : 46/11
Explanation:
Same as previous question Option A is correct.
Correct Answer: 336
Explanation:
28 x 2 x 6 = 336 degree
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: 22
Explanation:
22
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
Comments
There are no comments.More in Aptitude:
Programming
Copyright ©CuriousTab. All rights reserved.