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26 October, 13:50

The digits 1, 2, 3, 4 and 5 are randomly arranged to form a three digit number. The digits are not repeated. What is the proabability the number is even and greater than 500?

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  1. 26 October, 14:16
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    1/10

    Step-by-step explanation:

    There are 5·4·3 = 60 ways to choose a 3-digit number from 5 digits (no repeats).

    There re 1·2·3 = 6 ways to choose a number 5x2 or 5x4 from those digits.

    The probability of randomly choosing one of 60 that is one of the 6 is ...

    ... 6/60 = 1/10
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