Math, asked by Pulkit101, 1 year ago

the probability of guessing the correct answer to a certain question is x/2. If the probabilityof not guessing the correct answer to the question is 2/3, then find x

Answers

Answered by 1209

42

The sum of all the probabilities is equal to 1
So, x/2 = 1 - 2/3
x/2 = 1/3
x = 2/3

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1209: :)

Badal11: Most welcome

Pulkit101: I think i should say most welcome

Answered by Badal11

16

We have p(A)+p(A`)=1
given p(A)=x/2
and p(A`)=2/3
x/2+2/3=1
x=2/3

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