# SAT Mean, Median, and Mode

What is the average (arithmetic mean) of $$3^{15}, 3^{20},$$ and $$3^{25}?$$

(A) $$\ \ 20$$
(B) $$\ \ 60$$
(C) $$\ \ 3^{20}$$
(D) $$\ \ 3^{14} + 3^{19} + 3^{24}$$
(E) $$\ \ 3^{16} + 3^{21} + 3^{26}$$

×