License plate tags in a particular state are to cosist of 3 letters followed by 4 digits with repeated letters and digits allowed. How many different license plate tags can there be in the state?

Question

swamijatin2 · Answer

there is 26 letters in the alphabet and 10 numbers ranging fromzero to 9 
to the answer is 26*26*26*26*10*10*10*10= 4569760000

if numbers and letters were not able to be repeated it would be 26*25*24*23*10*9*8*7=1808352000