At Least One Even
Difficulty: Easy · Topics: Discrete Mathematics, Combinatorics, Combinations
A=\0,1,2,3,6,7,9\
In how many of the 3-element combinations of A is there at least one even number?
Difficulty: Easy · Topics: Discrete Mathematics, Combinatorics, Combinations
A=\0,1,2,3,6,7,9\
In how many of the 3-element combinations of A is there at least one even number?