You can see three almost identical images below. Can you spot the odd one out from them?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

A swan sits at the center of a perfectly circular lake. At an edge of the lake stands a ravenous monster waiting to devour the swan. The monster can not enter the water, but it will run around the circumference of the lake to try to catch the swan as soon as it reaches the shore. The monster moves at 4 times the speed of the swan, and it will always move in the direction along the shore that brings it closer to the swan the quickest. Both the swan and the the monster can change directions in an instant.
The swan knows that if it can reach the lake's shore without the monster right on top of it, it can instantly escape into the surrounding forest.

How can the swan successfully escape?

What kind of storm is always in a rush?

Using Only Five 5's and any mathematical operator make sum as 37

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

When is the top of a mountain similar to a savings account?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

What building has the most stories?