Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Suppose 
persons are sitting in a row. Two of them are selected at random. The probability that they are not together is
A
B
C
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
A
Let there be n persons and 
persons not selected are arranged in places stated above by stars and the selected 2 persons can be arranged at places stated by dots (dots are 
in number) So the favourable ways are 
and the total ways are 
, so
.
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