Question 27

In the following question, select the missing number from the given series.
21, 22, 34.5, 71, 180, 543, ?

Solution

The logic here is

21 x 1 + 1 = 22

22 x 1.5 + 1.5 = 34.5

34.5 x 2 + 2 = 71

71 x 2.5 + 2.5 = 180

180 x 3 + 3 = 543

Similarly, the next number in the series = 543 x 3.5 + 3.5 = 1904

$$\therefore\ $$The missing number in the series = 1904

Hence, the correct answer is Option D

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In the following question, select the missing number from the given series.21, 22, 34.5, 71, 180, 543, ?