This classic brain teaser is designed to make you focus on the pattern in the names.
Mary’s father has five daughters. Four are named Nana, Nene, Nini, and Nono. At first, you might be tempted to continue the pattern and guess something like “Nunu.”
But the answer is already given in the very first sentence.
It says Mary’s father has five daughters, which means Mary is one of them.
Answer: The fifth daughter is Mary.


