A bag contains 6 red and 4 green balls. A ball is drawn at random from the bag. Find the probability that is either a red ball or a green ball.

A bag contains 6 red and 4 green balls. A ball is drawn at random from the bag. Find the probability that is either a red ball or a green ball.
1). 1
2). 3
3). $\frac{1}{2}$
4). 5

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