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Introduction To Mathematical Modelling

Question
CBSEENMA9004107
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Two coins are tossed simultaneously 300 times. The frequency of appearing:

(i)  both heads : 75
(ii)  one head : 160
(iii)  No head : 65

Find the probability of occurrence of each of these events. 

Solution

Solution not provided.
Ans.  left parenthesis straight i right parenthesis space 1 fourth space space space space left parenthesis ii right parenthesis space 8 over 15 space space space left parenthesis iii right parenthesis space 13 over 60

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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