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Introduction To Mathematical Modelling

Question

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The CBSE has prepared a list of 400 examiners in Mathematics. Out of these, 250 examiners are from government schools and 150 from private schools. Find the probability that an examiner selected at random from the list is from government school.
$5 over 8$
$3 over 8$
$1 fourth$
$1 half$

Solution

A.

5 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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