Q. 135.0( 2 Votes )

# Find the number of words formed (may be meaningless) by using all the letters of the word ‘EQUATION’, using each letter exactly once.

Answer :

There are 8 alphabets in the word EQUATION.

Formula:

Number of permutations of n distinct objects among r different places, where repetition is not allowed, is

P(n,r) = n!/(n-r)!

Therefore, a permutation of 8 different objects in 8 places is

P(8,8) = = = = 40320

Hence there are 40320 words formed.

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Which of the following are true :

(2 + 3)! = 2! + 3!

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