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Byju's Answer
Standard XII
Mathematics
Proof by mathematical induction
A bag contain...
Question
A bag contains
5
white,
7
red and
3
black balls. If a ball is chosen at random, then find the probability that it is not red.
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Solution
NO of white balls
5
NO .of Red balls
7
NO .of Black balls
3
Total NO of balls
7
+
5
+
3
=
15
Required probability is
=
8
15
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