Question

Probability of guessing a correct answer is x/3 and guessing a wrong answer is x/5. What is the value of x

Answer 1

hope this helps u

Probability of guessing a correct answer =x/3

Probability of guessing a wrong answer = x/5

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

x/3+x/5=1

taking l.c.m

5x+3x/15=1

8x=15*1

x= 15/8