Question 202064
Need help:
The lists below show five agricultural crops in Alabama, Arkansas, and Louisiana.

Alabama....... Arkansas...... Louisiana
soybeans(s)... soybeans(s)... soybeans(s) 
peanuts (p)... rice (r)...... sugarcane (n)
corn (c)...... cotton (t).... rice (r)
hay (h)....... hay (h)....... corn (c)
wheat (w)..... wheat (w)..... cotton (t)

Let U be the smallest possible universal set that includes all of the crops listed; and let A, K, and L be the sets of five crops in Alabama, Arkansas, and Louisiana, respectively. Find the indicated set.
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U = {s,p,r,n,c,t,h,w}

A' intersect K'
A' = {r,n,t} : K' = {p,n,c,}
Therefore A' intersect K' = {n}
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 A)  (o with a / through it)
 B) {c, n, p, r, t}
 C) {c, p, r, t}
 D) {n}

Ans: D
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Cheers,
Stan H.