Question

20 tickets on which one to twenty are written mix together then a ticket is drawn at random out of them find the probability that the number on the drawn ticket is a multiple of 3 or 7

Answer 1

total tickets = 20

p( multiple of seven) =favourable outcomes / total no. of outcomes
= 2/20


p( multiple of three) =favourable outcomes / total no. of outcomes
= 6/20