Question 49

Select the number that can replace the question mark (?) in the following series.
114, 121, 138, 175, 242, ?

Solution

Given series is 114, 121, 138, 175, 242, ?

The logic here is difference of differences of the numbers are multiples of 10.

The next multiple will be 40 and the difference between required number and 242 is 107.

Let the required number = a

$$\Rightarrow$$ a - 242 = 107

$$\Rightarrow$$ a = 349

$$\therefore\ $$Required number = 349

Hence, the correct answer is Option A

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Select the number that can replace the question mark (?) in the following series.114, 121, 138, 175, 242, ?