On a given day, a hospital had 50 admissions with about 20 girls and 30 boys, out of which 10 girls and 20 boys needed surgery. What is the possibility of picking ou a person requiring surgery: (A) 6-Feb, (B) 5-Mar, (C) 2-Jan, (D) 25-Jun
Answer is B. P(surgery) = (those requiring surgery) / total number = 30/50 = 3/5The probability of picking boy requiring surgery would be 2/5The probability of picking girl requiring surgery would be 1/5