Let's TryDirections: Choose the letter of the correct answer. Write the chosen letter on a separate sheetof paper.1. It refers to the different arrangements of a set of objects.A. permutationB. combinationC. selectionD. differentiation2. Which situation illustrates permutation?A. assigning rooms to conference participantsB. selecting 15 questions to answer out of 20 questions in a testC. choosing 3 science books to buy from a variety of choicesD. forming a committee of senators3. How many ways can 7 potted plants be arranged in a row?B. 2 520A. 5 040С. 720D. 2104. What is P(10, 5)?А. 20 240B. 30 240C. 40 240D. 50 2405. How many four-digit numbers can be formed from the numbers 1. 3, 4, 5, 6, 8,and 9 if repetition of digits is not allowed?А. 720B. 540С. 360D. 8406. Which of the following expressions represents the number ofdistinguishable permutations of the letters of the word COMBINATIONS?12!12!A. 12!В.2!2!2!2!C.2!2 2!7. In how many ways can 7 people be seated around a circular table if two of theminsist on sitting beside each other?A. 1,440В. 720С. 360D. 2408. Which of the following is equal to P [n, (n-1)]?В. n!A. nС. n(n-1)D. n(n-1)!9. If (7,r ) = 840, what is r?A. 2В. ЗС. 4D. 510. If (n, 3) = 720, then n =А. 11В. 10С.9D. 8

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1. It refers to the different arrangements of a set of objects. A. permutation C. selection B. combination D. differentiation 2. Which situation illustrates permutation? A. assigning rooms to conference participants B. selecting 15 questions to answer out of 20 questions in a test C. choosing 3 science books to buy from a variety of choices D. forming a committee of senators 3. How many ways can 7 potted plants be arranged in a row? A. 5 040 B. 2 520 C. 720 D. 210