The probability that it will rain tomorrow is 0.85. What is the probability that it will not rain tomorrow?

Let E be the event of happening of rain 

P(E) is given as 0.85

Bar E ⟶not happening of rain

P(Bar E) = 1 – P(E) = 1 – 0.85 = 0.15 

∴ P(not happening of rain) = 0.15

Let event of raining tomorrow be P (A)

The probability of raining tomorrow is P (A) = 0.85

Probability of not raining is given by P (A) = 1 – P (A)

∴ Probability of not raining = P (A) = 1 – 0.85

= 0.15

The probability of tomorrow rain P(E) = 0.85 

Probability of not raining is given by P(\(\text{E}\)) = 1 – P(\(\text{E}\)) 

Therefore probability of not raining = P( \(\text{E}\)) = 1 – 0.85 = 0.15

P(happening) + P’(not happening) = 1 

Given: P = 0.85 

∴ P’ = 1 – 0.85 = 0.15

P(happening) + P’(not happening) = 1

Given: P = 0.85

∴ P’ = 1 – 0.85 = 0.15