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21 Jan 2026, 16:05
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
81% (01:48) correct
19%
(01:58)
wrong
based on 16
sessions
History
Date
Time
Result
Not Attempted Yet
| 04:00:00 | 04:00:12 | 04:00:40 | 04:01:12 |
| 04:00:05 | 04:00:20 | 04:00:55 | 04:01:20 |
| 04:00:07 | 04:00:35 | 04:01:05 | 04:01:25 |
| 04:00:10 | 04:00:38 | 04:01:10 | 04:01:50 |
In a shopping complex, an entrance chime turns ON whenever someone walks through the entrance. Once triggered, the chime remains ON for 10 seconds (unless someone walks through again before it turns OFF, in which case, the chime remains ON and the 10-second timer restarts from that time). The table lists all times from 04:00:00 PM to 04:02:00 PM at which someone walked through the entrance. For approximately how many seconds during this two-minute period was the chime OFF?
A. 10
B. 15
C. 25
D. 28
E. 35
10 Sep 2026, 22:46
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from 4:00:20 to 4:00:35 - 5 sec off
from 4:00:40 to 4:00:55 - 5 sec off
from 4:01:25 to 4:01:50 - 15 sec off
So, total 25 sec off. Ans is C.
from 4:00:40 to 4:00:55 - 5 sec off
from 4:01:25 to 4:01:50 - 15 sec off
So, total 25 sec off. Ans is C.
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