Question

find the probability ​

Answer 1

Step-by-step explanation:

n(S)= 50

let A be the event that the student selected has the blood group B

n(A)=12

P(A)=n(A)/n(S)

=50/12

=25/6

Answer 2

Answer:

12/40=6/20=3/10

Step-by-step explanation:

No of Students with blood group B= 12

Total No of students= 40

Probability of a event = No of times event occurred/Total no of events

P(E)=12/40

= 3/10

=0.3