Question

The probability that Prithvi Raj will solve a problem is 1/5. What is the probability that he solves at least one problem out of ten problems?

Answer 1

Answer:

p(E) =

Step-by-step explanation:

let 'E " be an event of solving one from ten problems

• favrble=1
• posssible=10

p(E) =1/10

we know that p(1)=1/5 then p(10)=1/5/10

=1/5×1/10. =1/50

Answer 2

The required probability of solving at least one question is 1/50

GIVEN: The probability that Prithvi Raj will solve a problem is 1/5.

TO FIND The probability that he solves at least one problem out of ten problems.

SOLUTION:

As we are given in the question,

The probability that Prithvi Raj will solve a problem is 1/5.

Let the probability of the required event be P(E).

The required event is solving at At least one out of ten questions.

Also,

Out of all the simple space,

Favorable Outcome is 1

The total possible events are 10.

P(E) =1/10

As we know,

P(1)=1/5

Therefore,

P(10)=1/5/10

P(E)=1/5×1/10. =1/50

P(E) = 1/50

Therefore,

The required probability of solving at At least one out of ten questions is 1/50.

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