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Ex 15.1

Ex 14.1, 1

Ex 14.1, 2 Important

Ex 14.1, 3

Ex 14.1, 4 (MCQ) Important

Ex 14.1, 5

Ex 14.1, 6 Important

Ex 14.1, 7

Ex 14.1, 8

Ex 14.1, 9

Ex 14.1, 10

Ex 14.1, 11

Ex 14.1, 12 Important

Ex 14.1, 13

Ex 14.1, 14 Important

Ex 14.1, 15 Important

Ex 14.1, 16

Ex 14.1, 17

Ex 14.1, 18 Important

Ex 14.1, 19 Important

Ex 14.1, 20* (Optional) Important

Ex 14.1, 21

Ex 14.1, 22 Important

Ex 14.1, 23

Ex 14.1, 24 Important You are here

Ex 14.1, 25 (i) Important

Ex 14.1, 25 (ii)

Last updated at Aug. 11, 2023 by Teachoo

Ex 14.1, 24 A die is thrown twice. What is the probability that 5 will not come up either time? Total number of outcomes = 36 Total outcomes where 5 comes up = 11 Total outcomes where 5 will not come up = 36 – 11 = 25 Now, Probability that 5 will not come up either time = (𝑇𝑜𝑡𝑎𝑙 𝑜𝑢𝑡𝑐𝑜𝑚𝑒𝑠 𝑤ℎ𝑒𝑟𝑒 5 𝑤𝑖𝑙𝑙 𝑛𝑜𝑡 𝑐𝑜𝑚𝑒 𝑢𝑝)/(𝑇𝑜𝑡𝑎𝑙 𝑛𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑜𝑢𝑡𝑐𝑜𝑚𝑒𝑠) = 𝟐𝟓/𝟑𝟔 Ex 14.1, 24 A die is thrown twice. What is the probability that (ii) 5 will come up atleast once? Total number of outcomes = 36 Total outcomes where 5 comes up atleast once = 11 Now, Probability that 5 will come up atleast once = (𝑇𝑜𝑡𝑎𝑙 𝑜𝑢𝑡𝑐𝑜𝑚𝑒𝑠 𝑤ℎ𝑒𝑟𝑒 5 𝑤𝑖𝑙𝑙 𝑐𝑜𝑚𝑒 𝑢𝑝)/(𝑇𝑜𝑡𝑎𝑙 𝑛𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑜𝑢𝑡𝑐𝑜𝑚𝑒𝑠) = 𝟏𝟏/𝟑𝟔