In the sequence defined by $S_n=S{n-1}+x, S_1=3$ and $S_5$ is equal to the sum of the distinct prime factors of

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by M7MBA » Fri Oct 16, 2020 7:21 am

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In the sequence defined by $S_n=S{n-1}+x, S_1=3$ and $S_5$ is equal to the sum of the distinct prime factors of $462.$ What is the average of the first five terms in the sequence?

A. 5
B. 13
C. 23
D. 26
E. 65

Answer: B

Source: Princeton Review

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Source: Beat The GMAT — Problem Solving | Fri Oct 16, 2020 7:21 am

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