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Q.
Out of 6 books, in how many ways can a set of one or more books be chosen
A.
64
B.
63
C.
62
D.
65
E.
None of the above
View Answer
Correct choice: B
Explanation:
Required number of ways =
6
C
1
+
6
C
2
+
6
C
3
+
6
C
4
+
6
C
5
+
6
C
6
=2
6
-1=63.
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