Q. What is the total number of different 10-letter arrangements that can be formed using the letters in the word STATISTICS?Answer:
Word Frequency: The word STATISTICS has 10 letters in total, with the following frequency of each letter: S occurs 3 times, T occurs 3 times, A occurs 1 time, I occurs 2 times, and C occurs 1 time.
Permutations Formula: To find the total number of different arrangements, we use the formula for permutations of a multiset: n1!×n2!×…×nk!n!, where n is the total number of items to arrange, and n1, n2, …, nk are the frequencies of each distinct item.
Calculation of Frequencies: In this case, n=10 (total letters), n1=3 (for S), n2=3 (for T), n3=1 (for A), n4=2 (for I), and n5=1 (for C).
Factorial Calculation: Now we calculate the factorial of each of these numbers: 10!=3,628,800, 3!=6, 2!=2, and 1!=1.
Application of Formula: We then apply the formula: 10!/(3!∗3!∗1!∗2!∗1!)=3,628,800/(6∗6∗1∗2∗1)=3,628,800/72=50,400.
Total Arrangements: Therefore, the total number of different 10-letter arrangements that can be formed using the letters in the word STATISTICS is 50,400.
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