Age old questions:
Dave is younger than Fred and older than George.
Alan is younger than Ian and older than Colin.
Ian is younger than George and older than John.
John is younger than Colin and older than Edward.
Fred is younger than Barry and older than Harry.
Harry is older than Dave.
Who is the youngest?
Answer: You have to try to create an “ascending” or “a descending” sequence and try to “fill in the gaps” :— answer is Edward.