Which number will replace the question mark in the following number series 54 68 78 84 ........

Logical Reasoning (MTS) Number series

Which number will replace the question mark (?) in the following number series?

54, 68, 78, 84, ?

This questions was previously asked in

SSC MTS 12th October 2021 Shift-2

Let's examine the series step-by-step to find the correct pattern:

- First Number = 54

- There is no pattern before this number.

- Second Number = 68

- Increment of 14 from the previous number (54 + 14 = 68).

- Third Number = 78

- Increment of 10 from the previous number (68 + 10 = 78).

- Fourth Number = 84

- Increment of 6 from the previous number (78 + 6 = 84).

- Missing Number = ?

- There seems to be a pattern decreasing by 4 in the increments: 14, 10, 6, so the next increment should be 2.

- Adding 2 to 84 gives us 86.

- Option:1 = 86: Correct based on the pattern.

- Answer: 86

- Option:2 = 88

- Incorrect; does not fit the pattern.

- Option:3 = 84

- Incorrect; not a new number.

- Option:4 = 90

- Incorrect; does not fit the pattern.

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