An experiment consist of drawing 1 card from a standard 52 - card deck. Let E be the event that card drawn is a 2. Find P (E').

The sum of the probabilities of an event E and its complement E' is 1,

that is P (E) + P (E') = 1, where E' is "not E".

The event E can happen in 4 ways, because there are four 2's that can be drawn.

P (E) = n (E) / 52=4/52=0.08

P (E') = 1-P (E) = 1-0.08=0.92

Answer: 0.92