1.

The marks obtained by 90 students of a school in mathematics out of 100 are given as under: Marks0−2020−3030−4040−5050−6060−7070 and aboveNo. of students78122519109 From these students, a student is chosen at random. What is the probability that the chosen student (i) gets 20% or less marks? (ii) gets 60% or more marks?

Answer»

The marks obtained by 90 students of a school in mathematics out of 100 are given as under:

Marks0202030304040505060607070 and aboveNo. of students78122519109

From these students, a student is chosen at random.

What is the probability that the chosen student

(i) gets 20% or less marks?

(ii) gets 60% or more marks?



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