SSC MTS 2022 Question Paper Shift 1 (July 22nd)

Question 38

Select the number from among the given options that can replace the question mark (?) in the following series.

6, 11, 21, 41, 81, ?

Solution

$$6\times2-1 = 12-1 = 11$$

$$11\times2-1 = 22-1 = 21$$

$$21\times2-1 = 42-1 = 41$$

$$41\times2-1 = 82-1 = 81$$

$$81\times2-1 = 162-1 = 161$$


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