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Introduction To Mathematical Modelling

Question

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One person is to be selected out of a group of 7 men and 3 women. The probability of selection of a man is:
$3 over 7$
$7 over 10$
$3 over 10$

1

Solution

B.

7 over 10

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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