An urn contains 1 green ball, 1 red ball, 1 yellow ball and 1 white ball. i draw 4 balls with replacement. what is the probability that there is at least one color that is repeated exactly twice?

1. 16.64

a^2+b^2=c^2

pr^2=pq^2+qr^2

pr^2=14^2+ 9^2

pr^2=196+81

pr= sqr root of 277

16.64

2. 11.31

c^2-a^2=b^2

18^2- 14^2=b^2

b^2=324-196

b=sqr root of 126

b=11.31

hope it ! (btw im in connections academy to, good luck! )

i think the answer is b x = 1, y = 35/2