What is the best way to set this up? Please explain in details.
With only 1 week to go..
Really appreciate your help!
The Export Alliance consists of exactly three nations: Nation X, Nation Y, and Nation Z. Each nation in the Alliance exports exactly two of the following five corps: oranges, rice, soybeans, tea and wheat. Each of these crops is exported by at least one of the nations in the Alliance. The following conditions hold:
None of the nations exports both wheat and oranges.
Nation X exports sotybeans if, but only if, Nation Y does also.
If Nation Y exports rice, then Nations X and Z both export tea.
Nation Y does not export any crop that Nation Z exports.
Q19. Nation X exports soybeans and tea, then which one of the following could be true?
(A) Nation Y exports oranges
(B) Nation Y exports rice
(C) Nation Y exports tea
(D) Nation Z exports soybeans
(E) Nation Z exports tea
Q20. If Nation Z exports tea and wheat, then which one of the following must be true?
(A) Nation X exports oranges
(B) Nation X exports tea
(C) Nation X exports wheat
(D) Nation Y exports rice
(E) Nation Y exports soybeans
Q21. It CANNOT be the case that both Nation X and Nation Z export which one of the following crops?
Q22. Which one of the following pairs CANNOT be the two crops that Nation Y exports?
(A) oranges and rice
(B) oranges and soybeans
(C) rice and tea
(D) rice and wheat
(E) soybeans and wheat