What will come in place of the question mark (?) in the following number series ?
The pattern here followed is :
20 * 2 - 2 = 38
38 * 2 - 2 = 74
74 * 2 - 2 = 146
146 * 2 - 2 = 290
290 * 2 - 2 = 578
The pattern here followed is :
20 * 2 - 2 = 38
38 * 2 - 2 = 74
74 * 2 - 2 = 146
146 * 2 - 2 = 290
290 * 2 - 2 = 578