Q. What is the total number of different 13 -letter arrangements that can be formed using the letters in the word SCARIFICATION?Answer:
Count Letters: Count the number of each letter in SCARIFICATION: S=1, C=2, A=2, R=1, I=3, F=1, O=1, T=1, N=1.
Calculate Factorial: Calculate the factorial of the total number of letters, which is 13! for the different arrangements if all letters were unique.13!=13×12×11×10×9×8×7×6×5×4×3×2×1.
Divide Total Arrangements: Divide the total arrangements by the factorial of the number of times each letter repeats to correct for overcounting.So we divide by 2! for C, 2! for A, and 3! for I.The correct expression is (2!×2!×3!)13!.
Calculate Factorials: Calculate the factorials: 2!=2 and 3!=6.
Plug in Values: Now, plug in the values and calculate the expression: 13!/(2!×2!×3!)=(13×12×11×10×9×8×7×6×5×4×3×2×1)/(2×2×6).
Simplify Expression: Simplify the expression by canceling out common factors.The expression simplifies to (13×12×11×10×9×8×7×5×4×3×1)/(1×1×1).
Calculate Simplified Expression: Calculate the simplified expression: 13×12×11×10×9×8×7×5×4×3×1=1,235,520.
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