Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 13)
13.
How many times in a day, are the hands of a clock in straight line but opposite in direction?
Answer: Option
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'clock only).
So, in a day, the hands point in the opposite directions 22 times.
Discussion:
49 comments Page 2 of 5.
Sanchit bhardwaj said:
1 decade ago
Great this question was one of the mind buzzing.
And to tell you if you are taking opposite hands of watch as 12:30, 1:35 so on, then I am afraid your are wrong.
Because the hour hand won't be exactly on 12 if its 12:30, it will be at mid way of 12 and 1; and if its midway how can you put minute hand of watch on 12:30.
It should be somewhere around 12:32.5. Rest you can check manually.
And to tell you if you are taking opposite hands of watch as 12:30, 1:35 so on, then I am afraid your are wrong.
Because the hour hand won't be exactly on 12 if its 12:30, it will be at mid way of 12 and 1; and if its midway how can you put minute hand of watch on 12:30.
It should be somewhere around 12:32.5. Rest you can check manually.
Shahid said:
1 decade ago
For 1 hr Minutes hand moves 60 mins and Hours hand(HH) only 5mins
it means to say Minutes Hans(MH) gains 55 mins over HH.
But be opposite the minutes hand should be 30 mins apart from HH.
55 mins of MH gained in 60 mins
1min gained in 60/55 mins
So 30 mins gained in (60/55)*30
So in 1 hr MH gains (360*2)/11
So in 24 hrs is (24*60)/(720/11)=22 times .
it means to say Minutes Hans(MH) gains 55 mins over HH.
But be opposite the minutes hand should be 30 mins apart from HH.
55 mins of MH gained in 60 mins
1min gained in 60/55 mins
So 30 mins gained in (60/55)*30
So in 1 hr MH gains (360*2)/11
So in 24 hrs is (24*60)/(720/11)=22 times .
Ayaz Ali Bhacho said:
1 decade ago
If Answer Is This ( 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
(The hands of a clock point in opposite directions (in the same straight line)(Because between 1 and 11 they point in opposite directions at 6 o'clcok only).
(The hands of a clock point in opposite directions (in the same straight line)(Because between 1 and 11 they point in opposite directions at 6 o'clcok only).
Tikeshwar sahu said:
9 years ago
According to me,
Only 2 times in a day it happens mathematically. Actually, because for this there should be 180 degree difference between both hands and when hour hand travels 1 degree minute hand travels 12 degree so only 6 o clock it happens that actully difference between both hands is 180 degree. So answer is 2 times in a day.
Only 2 times in a day it happens mathematically. Actually, because for this there should be 180 degree difference between both hands and when hour hand travels 1 degree minute hand travels 12 degree so only 6 o clock it happens that actully difference between both hands is 180 degree. So answer is 2 times in a day.
Vipul said:
1 decade ago
See what you must be thinking there are 12 hours and you should get 12 opposite directions right in between every hour. 12-1, 1-2, 2-3, 3-4, 4-5. Now next moment will occur at 6pm (you can count it as between 5-6) , but next will occur at around 0705 that is 7-8, so there is no such thing between 6-7.
(2)
Garhwal said:
1 decade ago
@Rajneesh.
The hands are not in a straight line at 5.55. Take a hand watch and see for yourself. This is the point being made. From 4:50, the next occurrence happens only at 6:00.
So in total, for every 12 hours, we have 11 such instances. For 24 hours, the number of instances is 11*2=24.
The hands are not in a straight line at 5.55. Take a hand watch and see for yourself. This is the point being made. From 4:50, the next occurrence happens only at 6:00.
So in total, for every 12 hours, we have 11 such instances. For 24 hours, the number of instances is 11*2=24.
(2)
Madhava said:
9 years ago
A watch, which gains uniformity was observed to be 6 minutes slow at 9 am on a Wednesday and 3 minutes fast at 12 noon on the subsequent Thursday. When did the watch show the correct time?
Solve and find the answer.
Solve and find the answer.
Absaar Jamshed said:
4 years ago
In every hour, the two hand are once in opposite direction like:
12:30.
1:35.
2:40.
3:45.
4:50.
5:55.
6:00.
7:05.
8:10.
9:15.
10:20.
11:25.
Which means in 12 hrs, it is 12 times and in 24 hours its 24 times.
12:30.
1:35.
2:40.
3:45.
4:50.
5:55.
6:00.
7:05.
8:10.
9:15.
10:20.
11:25.
Which means in 12 hrs, it is 12 times and in 24 hours its 24 times.
(14)
Varunnidhi said:
4 months ago
Yes, at first, I too thought it's 24 but the mistake is we assume that while the min hand is rotating hour is always near any hour but the hour hand also moves as time goes.
Anyone, correct me if I am wrong.
Anyone, correct me if I am wrong.
Ankit Gupta said:
10 months ago
It's 12 time in 12h in a 180° angle.
1) 1:27:3/11.
2) 2:21:9/11.
3)3:16:4/11.
4)4:10:10/11.
5) 5:5:5/11.
6) 6:00.
7) 7:5:5/11.
8) 8:10:10/11.
9) 9:16:4/11.
10)10:21:8/11.
11) 11:27:3/11.
12) 12:32:3/11.
1) 1:27:3/11.
2) 2:21:9/11.
3)3:16:4/11.
4)4:10:10/11.
5) 5:5:5/11.
6) 6:00.
7) 7:5:5/11.
8) 8:10:10/11.
9) 9:16:4/11.
10)10:21:8/11.
11) 11:27:3/11.
12) 12:32:3/11.
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