Answered

 how many different 10 letter words (real or imaginary) can be formed from the following letters?

K,Y,T,G,W,C,Y,D,A,A

Sagot :

    The # of ten letters words that can be formed   =       10! =   907,200                                                                                             2!2!    factorial    10! means      >      10 . 9 .8 .7 .6 .5 .4 .3 .2 .1     hench there are     907,200 ways