Tens Digit Not 2
Difficulty: Medium · Topics: Discrete Mathematics, Combinatorics, Counting Principle
A=\0,1,2,3,4,5\
Using elements of A, how many three-digit numbers with distinct digits can be written whose tens digit is not 2?
Difficulty: Medium · Topics: Discrete Mathematics, Combinatorics, Counting Principle
A=\0,1,2,3,4,5\
Using elements of A, how many three-digit numbers with distinct digits can be written whose tens digit is not 2?