What is the riddle which can be asked all day with a different correct answer each time.

Do You See It?

What happened when the wheel was invented?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Can you solve the below tricky visual equation?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

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

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?