Question

If $$\overline{E}$$ denote the complement or negation of an even E, what is the value of P(E) + P($$\overline{E}$$) ? 

Answer 1

Given: ${\displaystyle \overline{E}}$denotes the complement or negation of an event E.

TO FIND:  ${\displaystyle P\left(E\right)+P\left(\overline{E}\right)}$

CALCULATION: We know that sum of probability of occurrence of an event and probability of non occurrence of an event is 1.

Hence  ${\displaystyle P\left(E\right)+P\left(\overline{E}\right)=1}$

Hence the result is ${\displaystyle =1}$