The bar chart shows the scores of some students in a test. If one students is selected at random, find the probability that he/she scored at most 2 marks
-
A.
(frac{11}{18}) -
B.
(frac{11}{20}) -
C.
(frac{7}{22}) -
D.
(frac{5}{19})
Correct Answer: Option B
Explanation
at most 2 marks = 5 + 2 + 4 students = 11 students
probability(at most 2 marks) = (frac{11}{20})