Amy is playing with different polyominoes. She suddenly thinks of a problem as follows. Choose two positive integers $m,n$. If we can use only L-trominos to tessilate a $m\times n$ rectangle with no gaps, overlaps, or any square hanging out the rectangles, then we call the pair $(m,n)$ L-tromin...

Once more the shores of the island of Pohnpei have been the scene of strange fogs, strange smells, and equally strange newly discovered carvings. The previous carvings have widely been thought to be have a hoax. They were quite easy to decipher. The following, however, was carved in the same clif...

There was a family of 4 people . They had a daughter named Rina and his brother's name was Tarun . Everyone knew that their father was a scientist, and is on in doing some experiments all day and night and is trying to invent something , yet it was not known to them what he was trying to invent ....

It is your first day in prison and you are approached by a guard having a hunch for puzzles. He tells you that he gives every new prisoner the chance to be freed if they can present him with a version of his favorite puzzle that he can not solve. He proudly informs you that no one has gotten out ...

A woman known to be in possession of a stolen necklace of great value was tracked to this hotel room. After taking her into custody, the detectives search the premises. They find several items, including a bronze key (worn around the edges), a book on seafaring (pages 13, 22, and 37 had been c...

There is an advanced class for experienced lip-readers who want to become intructors. If they qualify, they will teach lip-reading classes themselves. All the students have excellent sight, hearing and other senses. They are all high-level lip-readers. They are all currently in good health and in...

I am currently my prefix. My words are my suffix. My lunges are my infix. My eyes are my whole.

What number should be in the question mark and why? (My original puzzle) 😀-12+43=89 25+16=13 😀+27+42=120 😀+91+90=?

A simple Riley riddle. Watch the tags! My prefix feels not so lucky in Rome. My infix denotes the Third Rome. My suffix plays in the brass band. My whole created a new country.

There is a row of 6 companies,each having a different colours,sales,from different tribes and has different shapes. IF: The first company colur is blue The company that sells rubber live next to the neighbor of the one that sell water. The yellow company's tribe is igbo. the yoruba tribe company...