Find the probability in a group of 10 students sitting in a row , two of them

Find the probability in a group of 10 students sitting in a row , two of them always sit next to each other

Quiz

Answer/Solution

0.2

Steps/Work

Assume that these 2 students are 1 and then u can sit is 9! and these 2 students can sit by 2 ways then total ways are 9!*2
and the probability is 9!*2/10! = 1/5=0.2
ANSWER:D

Other Calculator / Auto Solver

Find the probability in a group of students sitting in a row, two of them always sit next to each other

We can not automatically calculate the result. Use the steps above to manually calculate the result.