What will come in place of the question mark (?) in the following number series? 6, 18, 54, 162, ? MCQ with Answer and Explanation

Explanation:
The pattern is: 11×2=22, 22×2.5=55, 55×3=165. The multiplier increases by 0.5 each time. The next multiplier is 3.5. Therefore, 165×3.5=577.5.[reference:11]

Explanation:
The differences are: 8, 10, 12. These are increasing by 2. The next difference is 14. Therefore, 36+14=50.

Explanation:
The differences are: 5, 7, 9, 11. These are consecutive odd numbers. The next difference is 13. Therefore, 38+13=51.