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 is B
at most 2 marks = 5 + 2 + 4 students = 11 students
probability(at most 2 marks) = \(\frac{11}{20}\)