Question

How many words, with or without meaning, can be formed using all the letters of
the word EQUATION, using each letter exactly once?​

Answer 1

Answer:

25 words can be formed from the word EQUATION

Answer 2

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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.....:)