What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

What is common among 11, 69, and 88?

Can it be possible to build a house that has all its four walls facing towards the South?

All of the flowers I have are orchids except two. All of the flowers I have are hibiscuses except two. All of the flowers I have are roses except two.

Can you tell me how many flowers I have?

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

Find the last number in the series below:

voN luJ yaM raM ---

Who has married many women but was never married?