Question

ticket number from 1 to 20 are mixed up together and then a ticket is drawn at random what is the probability that the ticket drawn has a number which is the multiple of 3 or 7

Answer 1

S= {1,2,3,4,5,6,7,8,9,10,11,,12,13,14,15,16,17,18,19,20}
n(S)=20
let A be the event of getting multiple of 3 or
A = {3,6,7,9,12,14,15,18}
n (A) =8
p(A) = 8/20 = 2/5

Answer 2

$heres \: \\ ur \: answer$
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