For an initia screening of an admission ...

For an initia screening of an admission test, a candidate is given fifty problems to solve. If the probability that the candidate can solve and problem is `(4)/(5)`, then the probability that he is unable to solve less than two problems is:

`201/5(1/5)^49`

`316/25(4/5)^48`

`54/5(4/5)^49`

`164/25(1/5)^48`

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