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4 April, 22:57

The first two terms in a sequence are 13 and 21. Each subsequent term is the mean of the two previous

terms. What is the fifth term in the sequence?

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  1. 4 April, 23:25
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    5th term: 18

    Step-by-step explanation:

    Mean = sum of data/number of data

    Term 1: 13

    Term 2: 21

    Term 3: Mean of term 1 and term 2

    13+21/2 = 17

    Term 4: Mean of term 2 and term 3

    21+17/2 = 19

    Term 5: Mean of term 3 and term 4

    17+19/2 = 18

    Therefore, the fifth term in the sequence is 18.

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