Search any question & find its solution
Question:
Answered & Verified by Expert
6 boys and 6 girls in a row at random. The probability that all the girls sit together is
Options:
Solution:
2142 Upvotes
Verified Answer
The correct answer is:
$\frac{1}{132}$
6 boys and 6 girls sit in a row in 12 ! ways. Number of ways when all six girls sit together $=7 ! \times 6 !$
Required probability $=\frac{7 ! \times 6 !}{12 !}=\frac{1}{132}$
Required probability $=\frac{7 ! \times 6 !}{12 !}=\frac{1}{132}$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.