In a certain examination, a candidate has to pass in each of the 5 subjects. Hence, the number of ways he…
In a certain examination, a candidate has to pass in each of the 5 subjects. Hence, the number of ways he can fail is
$5 !$
5
$2^5-1$
$2^5$
Solution
In each subject either he can pass or he can fail Total number of ways $=2^5$
Number of ways which he can pass is only Hence, the number of ways in which he can fail $=2^5-1$