13. A social security number is a sequence of nine digits. How many different social security numbers if
zero cannot be the first digit with no repetition?
A. 3,265,290
B. 3,256,290
C. 3,265,920
D. 3,256,920
14. How many distinguishable permutations be made from the letters of the word INNING?
A. 40
B. 50
C. 60n
D. 70