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Que: A color “code” is defined as a sequence of four dots arranged in a row. Each dot is .....

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Que: A color “code” is defined as a sequence of four dots arranged in a row. Each dot is .....

by Max@Math Revolution » Mon Jul 19, 2021 1:22 am

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Que: A color “code” is defined as a sequence of four dots arranged in a row. Each dot is colored either “blue” or “green.” How many distinct codes can be formed?

(A) 2
(B) 4
(C) 8
(D) 16
(E) 32
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Re: Que: A color “code” is defined as a sequence of four dots arranged in a row. Each dot is .....

by Max@Math Revolution » Mon Jul 19, 2021 11:28 pm
Solution: The first dot can use Blue or Green, the second dot also can use Blue or Green, the third dot also can use Blue or Green and the Fourth dot also can use Blue or Green, so 2 * 2 * 2 * 2 = 16

Therefore, D is the correct answer.

Answer D
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