Find probability that sum of numbers on balls will be even


The bag has 15 balls, numbered consecutively from 1 to 15
a) the ball is selected at random. Find probability that it is even and less than 10
b) the ball is selected at random. Find probability that it is even or less than 10
c) 5 balls are selected at random without replacement. Find probability that sum of the numbers on balls will be even?

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Mathematics: Find probability that sum of numbers on balls will be even
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