Which of the following leads to the correct mathematical solution for the number of ways that the letters of the word RADAR could be arranged to create a five-letter code?  Answers: A) 5!/(2! x 2!) B) 6! − (3! + 2!) C) 6! − (3! × 2!) D) 6!/(3! + 2!) E) 6!/(3! × 2!)
Number of letters in word 'RADAR' = 5.   The letters 'A' and 'R' appear 2 times and 2 times respectively in the word 'RADAR'.   Therefore the mathematical solution for number of ways that the letters of the word R5!/(2! x 2!)D5!/(2! x 2!)R can be arranged to create five-letter code   = 5!/(2!*2!)   5!/(2! x 2!)nswer:5!/(2! x 2!)
<result>A</result>
Which of the following leads to the correct mathematical solution for the number of ways that the letters of the word RADAR could be arranged to create a five-letter code?