Question

cards bearing numbers 1,3,5.......35are kept in a bag a card is drawn at random from the bag find the probability of multiple of 7
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Answer 1

s=1,3,5,........35

n(s)= 18

e=multiple of 7 ( 7,35)

n(e)=2

p(e)=n(e)/n(s)

= 2/18=1/9