Arrange Them

Last Problem:

Jerry asked his fiance to name the day they’ll get married. She wasn’t prepared when he asked, but said

“I will marry you when the week after next is the week before last.”

Jerry said

“If I had received the promise yesterday, the waiting would have been six days shorter.”

 

On what day of the week did she accept Jerry’s proposal?

Answer:

Sunday. Sunday, being the first day of the week, she promised to marry Jerry “when the week after next is the week before last”. So, she will marry Jerry in 28 days after her promise. If she had promised a day earlier, then on Sunday, 22 days later, her promise would have fallen due.

Today’s Problem:

Think of 5 squares of the same size. How many ways can you combine these squares, edge to edge (with no mirror images), using all 5?