In a group of 200 students, 138 are enrolled in a history class, 115 are enrolled in a math class, and 91 are enrolled in both. What is the probability that a randomly selected student is enrolled in a history class but not a math class?
A. sixty-nine one hundredths
B. forty-seven two hundredths
C. ninety-one two hundredths
D. eighteen twenty-fifths

Question

In a group of 200 students, 138 are enrolled in a history class, 115 are enrolled in a math class, and 91 are enrolled in both. What is the probability that a randomly selected student is enrolled in a history class but not a math class?
A. sixty-nine one hundredths 
B. forty-seven two hundredths 	
C. ninety-one two hundredths 	
D. eighteen twenty-fifths

er.mohd.amir · Answer

since 138-91 =47 study history so P(history not math)=47/200