Answer:
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Explanation:
Scenario 1: He gives all the tacos to his friends and keeps none for himself.
Number of friends = 12 (He gives all the 12 tacos to his friends.)
Scenario 2: He gives 11 tacos to his friends and keeps 1 for himself.
Number of friends = 11 (He gives 11 tacos to his friends, and he keeps 1 for himself.)
Scenario 3: He gives 10 tacos to his friends and keeps 2 for himself.
Number of friends = 10 (He gives 10 tacos to his friends, and he keeps 2 for himself.)
Scenario 4: He gives 9 tacos to his friends and keeps 3 for himself.
Number of friends = 9 (He gives 9 tacos to his friends, and he keeps 3 for himself.)
In each scenario, he makes sure to avoid getting any tacos. Therefore, depending on how many tacos he chooses to keep for himself while giving the rest to his pals, the total number of friends who will receive tacos will either be 12, 11, 10, or 9.