1000+ Clock Reasoning Questions and Answers - 1
Question: 1
A mechanical grandfather clock is at present showing 7 hr 40 min 6 sec. Assuming that it loses 4 seconds in every hour, what time will it show after exactly 6{1}/{2} hours?
(A) 14 hr 9min 34 sec
(B) 14 hr 9 min 40 sec
(C) 14 hr 10 min 6 sec
(D) 14 hr 10 min 32 sec
Ans: B
Time lost in $$6{1}/{2}$$hours = $$(6{1}/{2} × 4)$$ sec = 26 sec.
Correct time after $$6{1}/{2}$$hours
= 7 hr 40 min 6 sec + 6 hr 30 min = 14 hr 10 min 6 sec
Time shown by the clock =
14 hr 10 min 6 sec - 26 sec = 14 hr 9 min 40 sec.
Question: 2
In an accurate clock, in a period of 2 hours 20 minutes the minute hand will move over?
(A) 140°
(B) 320°
(C) 520°
(D) 840°
Ans: D
Angle traced by the minute hand in 2 hrs 20 min,
i.e., 140 min = $$({360}/{60} × 140)$$ = 840°.
Question: 3
A clock strikes once at 1O’clock, twice at 2O’ clock thrice at 3O’ clock and soon. What is the total number of strikings in a day?
(A) 136
(B) 146
(C) 156
(D) 166
Ans: C
Total number of strikings = 2(1 + 2 + 3 + ……… + 12)
= $$2 × {12 × 13}/{2}$$ = 156.
Question: 4
It is between 3 P.M. and 4 P.M. and the distance between the hour and the minute hand of a clock is 18 minute spaces. What time does the clock show?
(A) 3.12 P.M.
(B) 3.27 P.M.
(C) 3.36 P.M.
(D) 3.46 P.M.
Ans: C
At 3 o’clock, the minute hand in 15 min spaces behind the hour hand.
Thus, the minute hand has to gain (15+18) = 33 minute spaces.
55 min are gained in 60 min.
33 min are gained in $$({60}/{55} × 33)$$ = 24 min.
∴ The hands will ne 18 min spaces apart at 3.36 P.M.
Question: 5
A bus leaves at 12.25 noon and reaches destination at 10.45 am. The duration of the journey is
(A) 22 hrs 10 min
(B) 22 hrs 20 min
(C) 22 hrs 40 min
(D) 24 hrs 40 min
Ans: B
Duration of the journey
= (Duration form 12.25 noon to midnight)
+ (Duration from 12.00 midnight to 10.45 a.m.)
= 11 hrs 35 min + 10 hrs 45 min = 22 hrs 20 min.
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