solution:-
given that word SEPTILLION
in that 10 word are there
=> 2 - I
=> 2 - L
SO formula
=> total ! / (number of looks alike !)
=> 10! / (2!*2!)
=> 10*9*8*7*6*5*4*3*2*1 / ((2*1)*(2*1))
=> 907200
Find the number of distinguishable arrangements of the letters of the worcd SEPTILLION
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