What is common among 11, 69, and 88?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

Count the squares in the matchstick puzzle below?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

How far can you walk into the woods?

Replace the question mark with the number below given a simple math problem.