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27 December, 20:01

What is the 5th term of this geometric sequence? 100, 20, 4, 0.8, ...

a. 124.8

b. 0.2

c. 0.16

d. 0.032

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Answers (1)
  1. 27 December, 23:38
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    First we have to find out the common number of them.

    For that purpose, the first number should be divided by next number.

    100/20 = 5

    20/4 = 5

    4/0.8 = 5

    we have found that 5 is the common number.

    0.8/5 = 0.16

    therefore the answer is c
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