Question

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?​

Answer 1

5th term: 18

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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