Answers

2016-04-06T16:16:36+05:30
Let the Probability to guessing the correct answer be P.
Then its complement is P'.

We know that P + P' =1
∴ x/3  +  5x/3 = 1
∴6x/3 = 1
∴2x = 1
∴x = 1/2 = 0.5

Thus x=1/2
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2016-04-06T18:25:13+05:30
probability of guessing the correct answer ( p)= x/3
probability of guessing the not a correct answer( p ) = 5x/3
p + p
₁ = 1
x/3 + 5x/3 = 1
6x/3 = 1
2x = 1
x = 1/2

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