Question 862570
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Hi
P(picking any given number) = 1/20
One number picked
P(picking 15) = 1/20
P(picking 15 0r 16) = {{{1/20 + 1/20 = 2/20 = 1/10}}}
P(picking number > 13)= {{{8/20 = 2/5}}}
P(picking Odd 0r number > 13) = {{{10/20 + 8/20 - 4/20 = 14/20 = 7/10}}}