Question

A bag contains five red marbles, four blue marbles, and four yellow marbles. You randomly pick a marble. What is the probability that the marble is red or blue?

Answer 1

n(s)= 5+4+4=13

n(e)= red + blue

=5+4

=9

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

p(e)= 9/13

=0.69

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