How many rearrangements of a b c d are there in which no two adjacent letters are also adjacent letters in the alphabet? For example, no such rearrangements could include either a b or b a.
Answer Choices
A. 0
B. 1
C. 2
D. 3
E. 4
How many rearrangements of a b c d are there in which no two adjacent letters are also adjacent letters in the alphabet? For example, no such rearrangements could include either a b or b a.
Answer Choices
A. 0
B. 1
C. 2
D. 3
E. 4