WAEC - Mathematics (2007 - No. 38)
If the probability of an event occurring is x, what is the probability of the event not occurring?
1 - x
x - 1
0
\(\frac{1}{x}\)
解释
If p is the probability of an event happening(occurring) and the probability of an event not occurring is p1 then p + p1 = 1
p1 = 1 - p
x1 = 1 - x
p1 = 1 - p
x1 = 1 - x