Question

If there is a war in every 15 years on the average, then find the probability that there will be no war in 25 years.

Answer 1

Answer:

heymate I think the probability would be

0

Answer 2

The probability that there will be no war in 25 years is (14 / 15$)^{25}$.

Given:

On an average, a war takes place once in every 15 years

To Find:

The probability that there will be no war in 25 years

Solution:

We have been given that a war takes place once in every 15 years.

⇒ Probability of a war happening in an year P = 1/15

Now, the probability that in 25 years at a stretch, there will be no war is given by

( 1 - P $)^{25}$ = ( 1 - 1\15  $)^{25}$ = (14 / 15$)^{25}$

∴ The probability that there will be no war in 25 years is (14 / 15$)^{25}$.

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