[LEGO][乐高][When LEGO meets UKMT][UKMT-IMC-2004-Q19]

casperyc 2023-1-17 437


What do you think the answer is?


最新回复 (1)
  • casperyc 2023-1-17
    引用 2

    Let's make a model in LEGO.

    You can then rotate to get all three views.

    Front Side Top

    Going back to building step three, top layer has volume of $14$, so does the bottom layer.

    The middle level has $4$ units.

    Hence there are $28+4$ units remaining in total.

    Therefore $$\frac{32}{3\times4\times5}=\frac{8}{15}$$

    which is answer $D$.