Question

If Allen's father is Ben's father's only son and Ben has nelther a brother nor a daughter, then how Ben is related to
Allen?​

Answer 1

Answer:

Ben is Allen's father. Ben has no brother or so Ben's father's only son is Ben. Now, Allen's father is Ben.

Hope you understand!!

Answer 2

Answer:

Ben is the father of Allen

Explanation:

Since Allen's father is the Ben's father only son.

That means Ben and Allen's father share the same father.

but since Ben doesn't have any brother or sister that means

Allen's father is Ben.