Can you find the key in the picture below?

A mathematician couple was having a Frappuccino in Starbucks sitting opposite to each other. Suddenly the guy noticed the text written on the paper in front of them and exclaimed that it was wrong. The girl denied it and said it is appropriate. Both are correct. What is written on the paper?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

There is something which is always coming but never arrives?

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

How many triangles are there on the puzzle below?