Question

Hey can you please help me posted picture of question

Answer 1

Total number of boys = 200
Number of left handed boys = 50

If a students is known to be a boy, the probability that he is left handed will be equal to = (Number of left handed boys) / (Total Number of boys)

So, If a students is known to be a boy, the probability that he is left handed will be =
`(50)/(200) = (1)/(4)`

Thus, the correct answer is option B