Published by:
CGP EDU Academic Team
Published on: August 14, 2026
There are 10 persons among whom are A and B who are made to stand in a row in random order. The probability that there is exactly one persons between A and B is
Text Solution
Verified by ExpertsThe correct answer is:
B
n(S) = Total number of ways in which 10 persons can be made to stand = 10!
n(E) = Number of ways in which exactly one person stands between A and B
= (10 – 2). 2.(10 – 2) ! = 16 x 8 !
P(E) = 
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
If and are the probabilities
of three mutually exclusive events, then the set of all values of p …
The probability that a leap year selected randomly will have
53 Sundays is
Three identical dice are rolled. The probability that same
number will appear on each of them will …
Three of the six vertices of a regular hexagon are chosen at random. The probability that the trian…
Three distinct numbers are selected from 100 natural number. The probability that all the three num…
Out of 21 tickets marked with numbers from 1 to 21, three are drawn at random. The chance that the …