[問題] GWD 7 - Q12

[kwtluck]

Q12

What is the cube root of w ?
(1)The 5th root of w is 64.
(2)The 15th root of w is 4.

Answer: D

請各位大大解惑 Thanks!!~

[Madi]

(1)
W=64^5=(2^6)^5=2^30

(2)
W=4^15=(2^2)^15=2^30

因此兩者皆充分