Web Reference: Aug 1, 2025 · Choose 4 Menu Items from a Menu of 18 Items A restaurant asks some of its frequent customers to choose their favorite 4 items on the menu. If the menu has 18 items to choose from, how many different answers could the customers give? Here we take a 4 item subset (r) from the larger 18 item menu (n). Therefore, we must simply find “18 choose 4.” Here is a table with solutions to commonly encountered combination problems known as n choose k or n choose r, depending on the notation used. Solutions are provided both with and without repetition. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.
YouTube Excerpt: Math 14 4.4.10 How many different possibilities are there?
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