Question

The probability of guessing the correct answer to a certain test question is x/12. If the probability of not guessing the correct answer to this question is 2/3, then x equals

Answer 1

Answer:4

Step-by-step explanation: sum of probability of all the events is equal to 1

x/12+2/3=1

x/12+8/12=1

(x+8)/12=1

x+8=12

x=4