You roll a number cube twice what is the probability of rolling a 2

The probability of getting a 5 from the first rolling is 1/6.  The probability of getting an even number  is 1/2 (= 1/6 (for a 2) + 1/6 (for a 4) + 1/6 (for a 6)).  As the two rollings are independent, you can just multiply two probability values to come up with a final answer.  That is, (1/6)·(1/2) = 1/12.

Note that I did not write this. This answer comes from Wyzant. I am only linking this to you so that you'll get the answer quickly.

i think its 1 out of 6 or 2 out of 12 depending on the way you meant the question  im pretty sure this is right correct me if iam wrong

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the answer is 31.27mph

i need more info. are you looked to see there mph? how much they deliver? how far they go?

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