Question 134

8, 9.4, 12.2, 17.8, 29, ?

Solution

The difference between consecutive terms is doubling.

For example, 9.4 - 8 = 1.4
12.2 - 9.4 = 2.8
17.8 - 12.2 = 5.6
29 - 17.8 = 11.2

Hence, the term to come next is 29 + 11.2*2 = 51.4

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