1. Ben’s oldest son was a twin.
2. All of Ben’s children were twins except for 41 of them.
3. All of Ben’s children were triplets except for 41 of them.
4. All of Ben’s children were quadruplets except for 41 of them.

How many children did Ben have?

*** Counting triplets as twins or, quadruplets as triplets is not permissible.

(In reply to answer - spoiler by Ady TZIDON)

Ady, If I read your solution correctly, then you haven't satisfied statements 3 or 4.  With the 43 children you define, you have 43 that are not triplets nor quadruplets?

Posted by Kenny M on 2013-09-02 10:22:27