Question

The probability of guessing correct answer is x/5. If the probability of not guessing the correct answer is 2x/5. What is the value of x?

Answer 1

p(correct)+p(incorrect)=1
p(correct) =x/5
p(incorrect)=2x/5

Now
x/5 +2x/5=1
3x/5 = 1

x=5/3

Answer 2

Hello yaar,

P(guessing correct answer) = x/5
P(not guessing correct answer) =  2x/5

P(happening) + P(not happening) = 1

x/5 +2x/5 = 1
3x/5 = 1
3x = 5
x = 5/3.

hope it helps u......