-How many 6 letters words can we make using the letters in word 'QUALITY' without replications?
A)6040
B)3528
C)720
D)5040

Question

Quizplus · Accepted Answer

The word 'QUALITY' has 7 unique letters. To form a 6-letter word without repetition, we can select any 6 letters out of the 7. This can be done in 7P6 ways (permutation of 7 items taken 6 at a time), which equals 7! / (7-6)! = 7! / 1! = 7*6*5*4*3*2*1 / 1 = 5040 / 7 = 720.

-How Many 6 Letters Words Can We Make Using the Letters