# If P(E) = 0.05, what is the probability of ‘not E’?

**Solution:**

We use the basic concepts and formulae of probability to solve the problem in an efficient manner.

Probability of (E) = 0.05

We know that Probability of (E) + Probability of (not E) = 1

0.05 + Probability of (notE) = 1

Probability of (not E) = 1 - 0.05

Probability of (not E) = 0.95

Therefore, the probability of 'not E' is equal to 0.95.

**Video Solution:**

## If P(E) = 0.05, what is the probability of ‘not E’ ?

### NCERT Solutions for Class 10 Maths - Chapter 15 Exercise 15.1 Question 5:

If P(E) = 0.05, what is the probability of ‘not E’ ?

If P(E) = 0.05, then the probability of 'not' E is 0.95