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Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
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Permutation and Combination
If nC10=nC12 then,find n.
10
12
22
24
Show Answer
Correct Answer:
22
Explanation:
Using,
C
r
n
=
C
n
-
r
n
we get
n – 10 = 12
or, n = 12 + 10 = 22
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