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Introduction To Mathematical Modelling

Question

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The following table depicts the scores of 200 students in a test:

Scores

Number of students

400-450

15

450-500

30

500-550

35

550-600

30

600-650

25

650-700

25

700-750

20

750-800

20

Find the probability that a student selected at random has his score in the interval 650-700.

$1 fourth$
$1 half$
$1 over 8$
$1 fifth$

Solution

C.

1 over 8

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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