Ok, so I have no idea where to begin on this question. Do I treat A and B as one letter? 25 choose n?
2026-04-09 02:05:54.1775700354
In how many ways can you arrange the alphabet so that A and B are always next to one another (In either order)
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Yes, you can treat $A$ and $B$ as one letter, call it $AB$. Order your alphabet, which now has $25$ letters (how many ways?). Now resolve $AB$ into either $A,B$ or $B,A$, which is two choices, so multiply by $2$.