# The marks obtained by 90 students of a school in Mathematics out of 100 are given as under:From these students, a students is chosen at random.What is the probability that the chosen student(i) gets 20% or less marks?(ii) gets 60% or more marks?

Total number of students : 90

Number of students who scored less than 20% : 7

Number of students who scored more than 60% : 19

Probability P() =

(i) Let P(20) be probability of students who scored less than 20%

P(20) = =

(ii) Let P(60) be probability of students who scored more than 60%

P(60) = =

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