Please see the following post.
https://www.beatthegmat.com/what-is-the- ... tml#749149
What is the probability that, twelve seconds from a randomly
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seandcarey
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Important that the distinction of this question is that it is less than 10, not less than or equal to.
What seconds are less than 10?
0,1,2,3,4,5,6,7,8,9 so 10 choices. 10/60 or 1/6.
The answer is E.
The 12 seconds part of the question I believe to be deceptive. All you need to know the number less than 10, but if you want to think of it as your start time to get to 0 is XX:XX:48 seconds to XX:XX:57 seconds. Or 10 possible start times.
What seconds are less than 10?
0,1,2,3,4,5,6,7,8,9 so 10 choices. 10/60 or 1/6.
The answer is E.
The 12 seconds part of the question I believe to be deceptive. All you need to know the number less than 10, but if you want to think of it as your start time to get to 0 is XX:XX:48 seconds to XX:XX:57 seconds. Or 10 possible start times.
