In how many ways can a student select 2 subjects from 5 subjects?
Answer Details
To calculate the number of ways a student can select 2 subjects from 5 subjects, we can use the formula for combinations:
C(n, k) = n! / (k! (n - k)!)
where:
n = number of subjects (5)
k = number of subjects to be selected (2)
So, substituting the values in the formula, we get:
C(5, 2) = 5! / (2! (5 - 2)!)
C(5, 2) = 120 / (2 * 3!)
C(5, 2) = 120 / (2 * 6)
C(5, 2) = 120 / 12
C(5, 2) = 10
So, a student can select 2 subjects from 5 subjects in 10 different ways.