Consider a collection of envelopes consisting of 1 red envelope 1 blue envelope 3 green envelope3...

Question

Question

Consider a collection of envelopes consisting of

1 red envelope

1 blue envelope

3 green envelope3 and

1 yellow. envelope

If 2 envelopes are selected at random, without replacement, determine the probability that at least one is blue

math Statistics-And-Probability

Answer 1

Answer #1

Ans:

Total number of envelopes=1+1+3+1=6

Probability that at least one is blue=1-P(none is blue)

=1-(5/6)*(4/5)

=1-(4/6)

=1-(2/3)=1/3

Answer 2

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