Direction: Find the wrong number in the following series 6, 16, 40, 108, 274, 690Options69040627416

The given series is 6, 16, 40, 108, 274, 690.

This appears to be a series where each number is multiplied by a certain factor to get the next number.

Let's find the ratio of each consecutive pair of numbers:

16/6 = 2.67 (approximately)

40/16 = 2.5

108/40 = 2.7

274/108 = 2.54 (approximately)

690/274 = 2.52 (approximately)

The ratios are not exactly the same, but they are close to 2.5.

So, if we assume the correct ratio is 2.5, we can check which number does not fit this pattern.

16 should be 2.5*6 = 15, not 16.

So, the wrong number in the series is 16.