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Maths Puzzle
Logical Reasoning
Seating Arrangement
Ten different letters of alphabet are given. Words with six letters are formed from these given letters. Find the number of words which have at least one letter repeated?
Read Solution (Total 1)
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- total words = 10^6
words with no letter repeat = 10*9*8*7*6*5 =151200
hence,
at least one = total - none
= 1000000-151200
=848800 - 9 years agoHelpfull: Yes(0) No(0)
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