Instructions

In each of the following questions, select the missing number from the given responses :

Question 184

1, 3, 8, 19, 42, ?

Solution

The difference between each term in the series is 1 more than twice the difference between the previous two terms.
3-1 =2
8-3=5
19-8=11
42-19 = 23
Therefore the missing term must be 47 more than 42 which is 89
Hence Option C is the correct answer.

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