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The first term of a sequence is 2. All subsequent terms are found by adding ... ...

The first term of a sequence is 2. All subsequent terms are found by adding 3 to the immediately preceding term and then multiplying the sum by 2. Which of the following describes the terms of the sequence?
(A) Each term is odd
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Math - Problem Set Y: Sequences & Series

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Justin M

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Posted: 01/07/2013 14:47

Is the sequence in the solution wrong since it does not take into account adding the 3 then multiplying by 2, should be 2,6,18,42 ?

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Admin

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Posted: 01/07/2013 18:51

First term = 2
Next term = (2 + 3) x 2 = 10, even;
Next term = (10+3) x 3 = 26, even; etc.

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