How many words, with or without meaning, can be formed using all letters of the word equation using each letter exactly once? Select one:?
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Number of letters in word EQUATION` = 8
n = 8
If all letters of the word used at a time
r = 8
Different numbers formed = nPr
= 8P`8
= 8!/(8 8)!
= 8!/0!
= 8!/1
= 8!
= 8 × 7 × 6 × 5 ×4 × 3 ×2 ×1
= 40320
Hope it's Helpful.....:)
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