An experiment succeeds twice as often as it fails. Find the probability that in the next six trials, there will be atleast 4 successes.

Explanation

Given,the probability of success is twice the probability of failure.

Let the probability of failure be x.

∴ Probability of success
`=>x+2x=1`

`⇒3x=1`

`⇒x=31​`


`∴2x=32​`

Again,let p=31​ and q=32​

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