Find the number of permutations of the first 8 letters of the alphabet taking four letters at a time.
a.1680
b.56
c.6720
d.109

a.1680

Step-by-step explanation:

The number of permutations of n things taking m at a time is given by :-

Similarly, the number of permutations of the first 8 letters of the alphabet taking four letters at a time will be :-

Hence, the number of permutations of the first 8 letters of the alphabet taking four letters at a time =1680

a

explanation:

a. -0.3 > -0.33