Question

The probability of guessing the correct
answer to certain test question is x/2
. If the probability of not guessing the correct answer to this question is
2/3, then find the value of x.​

Answer 1

Answer:

p(e) + p(not e) = 1

x/2 + 2/3 = 1

3x/6 + 4/6 = 1

3x + 4 = 6

3x = 2

so, x= 2/3