The Middle Child
Logic
Level
1
Mr. and Mrs. Tan have five children--four boys and a girl. Both statements below are true:
- Alfred is younger than Brenda but older than Eric.
- Darius is younger than Charles but older than Brenda.
Who is the middle child?
Alfred
Brenda
Charles
Darius
Eric
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Relevant wiki: Order Theory
From the first statement, Alfred is younger than Brenda but older than Eric so Brenda is the oldest of the three. In other words we have Brenda, Alfred, Eric (in order of birth). From the second statement, Darius is younger than Charles but older than Brenda so Brenda is the youngest among this group of three. Here we have Charles, Darius, Brenda (in order of birth). Combining the two, we have Charles (oldest), Darius, Brenda, Alfred, Eric (youngest).
Therefore, B r e n d a .