What expressions below are equal to 3^10?

a. (3x3)(3x3)(3x3)(3x3)(3x3)

b. (1/3)^-10

c. 3^5 x 3^2

d. 3^7 x 3^3

e. 3^20/3^10

f. (3^5)^2

g. 3^20/3^2