Multiple choice general knowledge math & puzzles

Light glows for every 13 seconds . How many times did it glow between 1:57:58 and 3:20:47 am.

  1. 392

  2. 383

  3. 384

  4. 385
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The time interval is 1 hour, 22 minutes, and 49 seconds, totaling 4969 seconds. Dividing 4969 by 13 gives 382.23. Including the initial glow at the start of the interval, the total count is 383 or 384 depending on the exact boundary conditions. 384 is the closest standard answer for such problems.

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