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22-08-2019
Mathematics

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What’s the fifth term of a sequence whose first term is 5 and whose common ratio is 3?

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22-08-2019

Answer:

405.

Step-by-step explanation:

This is a geometric sequence where the nth term = a1 r^(n -1).

Here a1 = 5 and r = 3 so

the fifth term a5 = 5(3)^(5-1)

= 5 * 81

= 405.

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