Question

If the probability of guessing correct answer is x/y
And probability of not Guessing correct answer is 4/5 then find the value of x
(Is my answer correct it is y/5)
Please answer it
for me whosoever answer this question correctly without copying will be genius and I will follow him/her

Answer 1

Answer:

probability of correct guess = x/y

probability of wrong guess = 4/5

therefore,

x/y + 4/5 = 1

(5x+4y)/5y = 1

5x + 4y = 5y

5x = y

x = y/5

I got the same answer. Hence, we can consider your answer to be correct.

: )

Answer 2

Step-by-step explanation:

It is given that the probability of guessing correct answer is x/y

And probability of not Guessing correct answer is 4/5.

P(Correct) = x/y

P(Incorrect) = 4/5

Here, We know that a probability formula that is P(Incorrect) = 1 - P(Correct)

Putting given values in Formula, We have:

P(Incorrect) = 1 - P(Correct)

4/5 = 1 - x/y

4/5 +x/y = 1

5-4/5 =x/y

1/5 = x/y

So, Value of x will be 1. (Using Equality)