Inside a box there are six smaller boxes,and inside each small box are six much smaller boxes.

问题描述:

Inside a box there are six smaller boxes,and inside each small box are six much smaller boxes.
How many boxes altogether?
A 36
B 37
C 43
D42
怎么算的

43个.最外边一个大盒子,里面留个小盒子.里面留个小盒子里面有各自有六个.1+6+6*6