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Question : 3
Total: 11
A number is chosen randomly from numbers 1 to 60 . The probability that the chosen number is multiple of 2 or 5 is
Solution:
Let A =
andB =
∴ P ( A ∪ B ) = P ( A ) + P ( B ) − P ( A ∩ B )
=
+
−
=
=
∴
and
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