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 15 of 27.
SWAPNIL said:
1 decade ago
We can do this question very simply by using following formula..
360-(30H- 11/2M ).
Where H = 10 and M= 25.. easy na ?
360-(30H- 11/2M ).
Where H = 10 and M= 25.. easy na ?
Sumit said:
1 decade ago
Reflex angle means angle is greater than 180 and less than 360. for example angle 190,210,310 etc are as reflex angles.
Pallavi said:
2 decades ago
I got the answer for my previous question. But one more thing I want to now is how reflex angle calculated . and why?
(1)
Venu.lekkala said:
1 decade ago
Here we consider 10.25 hrs not in min
10.25 min then 10 hrs + (25 min/60)
= 10 + (5/12)
= (120+5)/12
= 125/12.
10.25 min then 10 hrs + (25 min/60)
= 10 + (5/12)
= (120+5)/12
= 125/12.
Ravi said:
1 decade ago
@Haimanti
Yes. You can solve like that. But why not go for more faster step. 10+25/60. It will ease your calculation.
Yes. You can solve like that. But why not go for more faster step. 10+25/60. It will ease your calculation.
Naresh said:
10 years ago
Time is 10:25.
Formula = (11/2 (minutes) - 30 (hours)).
(11/2 (25) - 30 (10)).
= 162.5.
RA is 360 - 162.5 = 197.5.
Formula = (11/2 (minutes) - 30 (hours)).
(11/2 (25) - 30 (10)).
= 162.5.
RA is 360 - 162.5 = 197.5.
Username or Email said:
1 decade ago
So, simple when the question asks between 1-11.
Take a formula as 11:60 - Time.
11:60 - 10:25 = 1:35 is the answer.
Take a formula as 11:60 - Time.
11:60 - 10:25 = 1:35 is the answer.
Aravind said:
1 decade ago
Hi, a single formulae is used to caculate ange between two needles in the clock.... anybody know it? Please help me.
Harshit Dahiya said:
1 decade ago
Please not that 10.25 cannot be taken as 25 minutes past 10. Rather, it should be 15 mins past 10. Its basic maths.
Kezang said:
4 years ago
11/2m-30 x h,
11/2x25-30 x 10,
137.5 - 300,
162.5.
A reflex angle is 360 degree.
So, 360 - 162.5= 197.5 degree.
11/2x25-30 x 10,
137.5 - 300,
162.5.
A reflex angle is 360 degree.
So, 360 - 162.5= 197.5 degree.
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