Light glows for every 13 seconds . How many times did it between 1:57:58 and 3:20:47 am  Answers:
A) 382
B) 368
C) 388
D) 390
E) None
Explanation :   For every 13 seconds means in an hour light will glow 276 times and 12 seconds extra. Means in   second hour immediately after 1 second light will glow.   Means at 1:57:58 seconds 267 times and 7 seconds are more in it. Means first time light will glow at 1:58:05.   The difference in seconds between 1:58:05 and 3:20:47 is 4962 seconds. Light will glow 381 times and 9 seconds left   So total 382 times light will glow.   382nswer : 382
<result>A</result>
Light glows for every 13 seconds . How many times did it between 1:57:58 and 3:20:47 am