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Introduction To Mathematical Modelling

Question

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Following are the marks of a group of 100 students in a test of reading ability:

Marks

Number of students

50–52

5

47-49

12

44–46

16

41-43

19

38-40

20

35-37

15

32-34

15

Find the probability that a student selected at random gets marks in the interval 38–40.

$1 half$
$1 third$
$1 fourth$
$1 fifth space$

Solution

D.

1 fifth space

Some More Questions From Introduction to Mathematical Modelling Chapter

Activity: Note the frequency of two wheelers, three wheelers and four wheelers going past during a time interval, in front of your school gate. Find the probability that any one vehicle out of the total vehicles you have observed is a two-wheeler.

Activity: Ask all the students in your class to write a 3-digit number. Choose any student from the room at random. What is the probability that the number written by her/him is divisible by 3 ? Remember that a number is divisible by 3, if the sum of its digits is divisible by 3.

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Mock Test Series

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