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The following table given the marks scor...

The following table given the marks scored by 50 students in a 100 marks test of Mathematics.
`{:("Marks",0-20,20-40,40-60,60-80),("No of "3,12,18,10,7),("students",,,,):}`
A student is selected randomly from the class.
Find the probability that selected student has scored 60 or more than 60 marks.

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The correct Answer is:
`23/90`
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KUMAR PRAKASHAN-PROBABILITY -EXERCISE 15.1
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  8. An organisation selected 2400 families at random and surveyed them to ...

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  9. Find the probability that a student obtained marks 60 or above.

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  12. To know the opinion of the students about the subject statistics , a s...

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