Question

The probability of occurrence of event A is 2/5. Then find P (not A)

Answer 1

Step-by-step explanation:

P not A = 1-2/5 = 3/5

....!

Answer 2

The probability of P (not A) is $\frac{3}{5}$.

Given:

The probability of occurrence of event A is 2/5.

To Find:

The probability of P (not A).

Solution:

To find the probability of P (not A) we will follow the following steps:

As we know,

The sum of the probability of all events event is always equal to one.

So,

The sum of the probability of an event A and not the probability of none occurrence of event A = 1.

The probability of occurrence of event A + probability of not occurrence of event A = 1

Now,

The probability of not occurring events A or P

$= 1 - \frac{2}{5} = \frac{3}{5}$

Henceforth, the probability of P (not A) is $\frac{3}{5}$

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