CSC
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Numerical Ability
Clocks and Calendars
Find the angle between the hour hand and the minute hand of a clock when
3.25.
Read Solution (Total 9)
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- There is one formula...use this fromula for this type of questions
angle=30(hours)-(11/2)(minutes)
=30*3-(5.5*25) (hour=3 and minutes=25)
=90-137.5
=47.5(consider only the numbers neglect the +ve and -ve signs) - 12 years agoHelpfull: Yes(50) No(1)
- angle traced by hour hand in 12 hr=360deg
i.e. at 3:25 which is 41/12hr angle traced= 360/12 * 41/12= 102 1/2deg
now,
angle traced by min hand in 60min =360deg
i.e. angle traced in 25min = 360/60 * 25 =150deg
so, the angle b/w hour and min hand= 150-102 1/2 = 47 1/2 deg - 12 years agoHelpfull: Yes(10) No(1)
- formula::angle=11/2m-30h
11/2 * 25-30*3
=95/2
=47.5 - 11 years agoHelpfull: Yes(3) No(0)
- ans:60*
we all know that the angle at the time 3 O'clock is 90*
and the angle at the time 3:30 is also 90*
every 5 min increase or decrease 90/3= 30*
so the angle of 3:25 is 60* - 12 years agoHelpfull: Yes(2) No(30)
- Angle Traced by hour hand in one hour is 30deg.
Angle Traced by hour hand in one minutes is 0.5deg.
Normally Answer should be 60deg(3 to 5) but due to 25 min hour hand shifted by (0.5*25)=12.5
Answer=(60-12.5)=47.5 - 10 years agoHelpfull: Yes(2) No(0)
- ans:angle 47.5
- 12 years agoHelpfull: Yes(1) No(6)
- it is 47.5
- 10 years agoHelpfull: Yes(1) No(0)
- don't go for large methods
simple use d formula angle={1/2[60H-11M]}
=1/2[60*3-11*25]
=47.5 - 9 years agoHelpfull: Yes(0) No(0)
- ghjbghgfgh
- 9 years agoHelpfull: Yes(0) No(2)
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