# Given the probability p=0.15 that an event will not happen, how do you find the probability that the event will happen?

The probability that the event will happen is $0.85$
There areonly two possibilities, one - event happening and two - event not happening. As probabbility of event not happening is $0.15$ i.e. 15% possibikity of event not happening,
possibility that event will happen is 100%-15%=85%
Hence the probability that the event will happen is $0.85$