Find the odd one out: 3, 9, 27, 81, 243, 729, 2188

Question

Accepted Answer

(C) 2188. Explanation: All are powers of 3 except 2188 (3^0=1, 3^1=3, 3^2=9, 3^3=27, 3^4=81, 3^5=243, 3^6=729, 3^7=2187)