What is / text{P (not }3) P (not 3) start text, P, left parenthesis, n, o, t, space, end text, 3, right parenthesis? If necessary, round your answer to 222 decimal places.

There is no enough information to determine probability of not having 3, P (not 3).

Suppose we were given the probability of having 3, P (3), we can easily find P (not 3).

The probability of success plus the probability of failure of an event is always equal to 1.

If p is the probation success, and q, of failure, then p + q = 1

So,

P (3) + P (not 3) = 1

That is

P (not 3) = 1 - P (3).