If a ball is drawn st ramdom from box containing 6 red 4 blue 5 white balls what is probably that ball drawn is red or blue

If a ball is drawn st ramdom from box containing 6 red 4 blue 5 white

1.	If a ball is drawn st ramdom from box containing 6 red 4 blue 5 white balls what is probably that ball drawn is red or blue
Answer» Total number of balls 6+4+5=15 Out of 15 balls 1 ball can be drawn in C(15,1) ways We want either red or blue ball So 10 balls are favourable. Out of 10 one ball can be drawn in C(10,1)ways. Probability of success =C(10,1)/C(15,1)=10/15=2/3

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If a ball is drawn st ramdom from box containing 6 red 4 blue 5 white balls what is probably that ball drawn is red or blue

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