I was having an issue with this problem in my homework... was wondering if someone could help me out.
how many ways can u spell a 4 letter word using letters from CALCULATE using:
1) all different letters
2) two "a"s and another identical letter pair
3) two identical letter pairs
4) one pair of identical leters and 2 other different letters
and how many total 4 letter possibilities are there?
Thanks for your help!