Details explanation needed please!

bizimath

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Jan 4, 2017
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Three red and three blue flags are arranged randomly along a wire. What is the probability that the six flags alternate in color?

Answer is 1/10.

Thank you.
 
Three red and three blue flags are arranged randomly along a wire. What is the probability that the six flags alternate in color?

Answer is 1/10.

Thank you.
There's only two ways that can happen:
RBRBRB or BRBRBR

Can you find P(RBRBRB)?

Use the multiplication principle for probability.
 
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