Question

A die is thrown. If A is the event that the number on upper face is less than 5, then write sample space and event A in set notation.

Answer 1

The sample space (S) is
S = {1, 2, 3, 4, 5, 6}
No. of sample points = n(S) = 6
Let A be the event of getting numbers less than 5.
∴A = {1, 2, 3, 4}
⇒ n(A) = 4