PrepTest 39, Section 1, Question 22
Barbara is shopping at a pet store to select fish for her new aquarium from among the following species: J, K, L, M, N, O, and P. For each of the seven species, the store has several fish available. Barbara makes her selection in a manner consistent with the following conditions:
Barbara is shopping at a pet store to select fish for her new aquarium from among the following species: J, K, L, M, N, O, and P. For each of the seven species, the store has several fish available. Barbara makes her selection in a manner consistent with the following conditions:
Barbara is shopping at a pet store to select fish for her new aquarium from among the following species: J, K, L, M, N, O, and P. For each of the seven species, the store has several fish available. Barbara makes her selection in a manner consistent with the following conditions:
Barbara is shopping at a pet store to select fish for her new aquarium from among the following species: J, K, L, M, N, O, and P. For each of the seven species, the store has several fish available. Barbara makes her selection in a manner consistent with the following conditions:
If she selects one or more K, then she does not select any O.
If she selects one or more M, then she does not select any N.
If she selects one or more M, then she selects at least one O.
If she selects one or more N, then she selects at least one O.
If she selects one or more O, then she selects at least one P.
If she selects one or more P, then she selects at least one O.
If she selects any O at all, then she selects at least two O.
Which one of the following statements must be false?
Barbara selects exactly four fish, at least one of which is a J.
Barbara selects exactly four fish, at least one of which is an L.
Barbara selects exactly three fish, at least one of which is an M.
Barbara selects exactly three fish, at least one of which is an O.
Barbara selects exactly three fish, at least one of which is a P.
Explanations
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