Question 936880
total no of letters in MATHEMATICS  =11
no of A 's =2
no of M's  = 2
no of T'S = 2
NO of words that can be formed  = {{{p(11,4)/(2!*2!*2!)}}}
                           p(11,4)  ={{{ (11*10*9*8)/(4*3*2*1)}}}
                                     =7920
 2!  = 2*1 = 2
Hence
 NO of words that can be formed  = {{{p(11,4)/(2!*2!*2!)}}}
                             ={{{ (7920)/(2*2*2)}}}
                           =990
Result:  990