Question

If a bag contains Red , Blue and Green balls only then the sum of Probability of these elementary event is equal to 1.

P(R) + P(B) + P(G) = 1

Then,
P(not R) + P(not B) + P(not G) = ?

Answer 1

Given,

P(R) + P(B) + P(G) = 1

Elementary event is equal to 1

So,

P(not R) + P(not B) + P(not G)=1

Answer 2

P(R) + P(B) + P(G) = 1

Then,

P(not R) + P(not B) + P(not G) = 1