Identify the next mathematical term in the following geometric sequence: 2, 6, 18, 54, ?

Identify the next mathematical term in the following geometric sequence: 2, 4, 8, 16, ?

Identify the next mathematical term in the following geometric sequence: 5, 15, 45, 135, ?

Identify the next mathematical term in the following geometric sequence: 4, 8, 16, 32, ?

Identify the next mathematical term in the following geometric sequence: 3, 6, 12, 24, ?

Identify the next mathematical term in the following geometric sequence: 4, 12, 36, 108, ?

Identify the next mathematical term in the following geometric sequence: 5, 10, 20, 40, ?