Subscribe to our Youtube Channel - https://you.tube/teachoo
Last updated at May 29, 2018 by Teachoo
Transcript
Ex15.1, 12 A game of chance consists of spinning an arrow which comes to rest pointing at one of the numbers 1, 2, 3, 4, 5, 6, 7, 8 (see the given figure), and these are equally likely outcomes. What is the probability that it will point at 8? Total numbers = 8 Number of times we can get 8 = 1 Probability of getting 8 = ( 8)/( ) = 1/8 Ex15.1, 12 (ii) Odd number? Total numbers = 8 Odd numbers that can be the outcome = 1, 3, 5, 7 Number of odd number = 4 Probability of getting odd number = ( )/( ) = 4/8 = 1/2 Ex15.1, 12 (iii) Number greater than 2? Total numbers = 8 Number greater than 2 = 3, 4, 5, 6, 7, 8 Number of numbers greater than 2 = 6 Probability of getting number greater than 2 = ( 2)/( ) = 6/8 = 3/4 Ex15.1, 12 (iv) Number less than 9? Total numbers = 8 Number less than 9 = 1, 2, 3, 4, 5, 6, 7, 8 Number of number less than 9 = 8 Probability of getting number less than 9 = ( 9)/( ) = 8/8 = 1
Ex 15.1
Ex 15.1, 2
Ex 15.1, 3
Ex 15.1, 4 Important
Ex 15.1, 5
Ex 15.1, 6 Important
Ex 15.1, 7
Ex 15.1, 8
Ex 15.1, 9
Ex 15.1, 10
Ex 15.1, 11
Ex 15.1, 12 You are here
Ex 15.1, 13
Ex 15.1, 14
Ex 15.1, 15 Important
Ex 15.1, 16
Ex 15.1, 17
Ex 15.1, 18
Ex 15.1, 19 Important
Ex 15.1, 20* (Optional)
Ex 15.1, 21
Ex 15.1, 22
Ex 15.1, 23
Ex 15.1, 24 Important
Ex 15.1, 25 Important
About the Author