Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 2)
2.
The reflex angle between the hands of a clock at 10.25 is:
Answer: Option
Explanation:
| Angle traced by hour hand in | 125 | hrs = |  |
360 | x | 125 |  |
° | = 312 | 1 | ° | . |
| 12 | 12 | 12 | 2 |
| Angle traced by minute hand in 25 min = | |
360 | x 25 | |
° | = 150°. |
| 60 |
 Reflex angle = 360° - |
|
312 | 1 | - 150 | |
° | = 360° - 162 | 1 | ° | = 197 | 1° | . |
| 2 | 2 | 2 |
Discussion:
269 comments Page 13 of 27.
Ashwini said:
10 years ago
Formula:
0.5[60*H-11*M].
= 0.5[60*10-11*25] = 162.5.
If angle is greater than 180 degree than subtract from 360 degree.
= 360-162.5 = 162.5.
0.5[60*H-11*M].
= 0.5[60*10-11*25] = 162.5.
If angle is greater than 180 degree than subtract from 360 degree.
= 360-162.5 = 162.5.
Vru said:
6 years ago
Answer is 180 degrees.
In one hour, the hour hand rotates 30 degrees.
In 6 hours, the hour hand rotates 180 degrees.
Hence, the answer is D.
In one hour, the hour hand rotates 30 degrees.
In 6 hours, the hour hand rotates 180 degrees.
Hence, the answer is D.
Sachin said:
6 years ago
10:25 ,
10*60+25=625 min.
And 625/2 degree.
25*6 = 150 degree.
∠ = 625/2 - 150 = 325/2.
The reflex angle = 360-325/2 = 395/2 = 197.5.
10*60+25=625 min.
And 625/2 degree.
25*6 = 150 degree.
∠ = 625/2 - 150 = 325/2.
The reflex angle = 360-325/2 = 395/2 = 197.5.
Nitesh Nandwana said:
1 decade ago
@ Sharath and all members
Don't miss guide , if you've not knowledge about anything.
An angle greater than 180 degrees (but less than 360).
Don't miss guide , if you've not knowledge about anything.
An angle greater than 180 degrees (but less than 360).
Sowmia said:
1 decade ago
Vasuroshan answer is very simple and well undestandable but please tel me one thing if the angle is graterthan 180 then what we should do?
Meghna said:
4 years ago
When we calculated the angle swept by hr hand we added the minutes, like 10 + (25/60). Why?
Why can't it be just 10? Please anyone explain.
Why can't it be just 10? Please anyone explain.
Jitendra chauhan said:
1 decade ago
It is very easy. We can solve it like
10.25 hr=10hr+25 min
=(10+25/60)hr
=10+5/12
=(120+5)/12
=125/12 hr
10.25 hr=10hr+25 min
=(10+25/60)hr
=10+5/12
=(120+5)/12
=125/12 hr
Akshay salvi said:
9 years ago
Hi, friends.
It is very simple when we are calculating for hours hand we divide it by 60mins
while for minutes, we divide it by 60.
It is very simple when we are calculating for hours hand we divide it by 60mins
while for minutes, we divide it by 60.
Gobi said:
1 decade ago
@Deepa
Because 30 degree is to mention for one hour so the angle traced out in (1 hr= 30 degrees) * (25 min ie., 25/60 hrs) = 25/2.
Because 30 degree is to mention for one hour so the angle traced out in (1 hr= 30 degrees) * (25 min ie., 25/60 hrs) = 25/2.
Vinothini said:
1 decade ago
Hi haimanti i think so ur guess is correct bcoz,10 is hour so to make it minute *60
ie)10*60=600+25
=625/60
=125/12
ie)10*60=600+25
=625/60
=125/12
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