What is the rank of the word 'MATHEMATICS' in dictionary???
Answers
Rank of Mathematics = 28,79,661
Step-by-step explanation:
Rank of 'MATHEMATICS' is the position of word 'MATHEMATICS' when all permutations of the word are written in alphabetical order.
MATHEMATICS
11 - Letters
M - 2 , A - 2 , T - 2
Total possible Words = 11!/(21*2!*2!) = 49,89,600
A , A , C , E , H , I M , M , S , T , T
Starting with A - 10!/2!*2! = 907200
Starting with C - 10!/2!*2! 2! = 4,53,600
Starting with - E - 10!/2!*2! 2! = 4,53,600
Starting with - H - 10!/2!*2! 2! = 4,53,600
Starting with - I - 10!/2!*2! 2! = 4,53,600
Starting with MAA- 8!/2! = 20160
Starting with MAC- 8!/2! = 20160
Starting with MAE- 8!/2! = 20160
Starting with MAH- 8!/2! = 20160
Starting with MAI- 8!/2! = 20160
Starting with MAM- 8!/2! = 20160
Starting with MAS - 8!/2! = 20160
Starting with MATA - 7! = 5040
Starting with MATC - 7! = 5040
Starting with MATE - 7! = 5040
Starting with MATHA - 6! = 720
Starting with MATHC - 6! = 720
Starting with MATHEA - 5! = 120
Starting with MATHEC 5! = 120
Starting with MATHEI 5! = 120
Starting with MATHEMAC - 3! = 6
Starting with MATHEMAI - 3! = 6
Starting with MATHEMAS - 3! = 6
Starting with MATHEMATC - 2! = 2
Then comes Mathematics
Add all above number to get Rank of Mathematics = 28,79,661
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