What is next in pattern 5 12 26 54 110?

Answer 1

121

Answer 2

222.

To get from 5 to 12, we add 7.

To get from 12 to 26, we add 14.

To get from 26 to 54, we add 28.

To get from 54 to 110, we add 56.

The number added is doubling each time. So next time we need to add 112 (56*2), so the next number in the sequence is 222.

Answer 3

222