Answer:
4/11, then 1/10
Step-by-step explanation:
11 letters in Mathematics, 4 are Ms or As. 4/11
now, after 1 has been taken out, it cant be put back in. "...without replacing the letters."
10 letters left after 1 has been taken out. 1 is a C. 1/10
BOOM! MaThEmAtIcS :P