Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

Look at the picture and find out which square is not linked with any of the other squares.

If eleven plus two equals one, what does nine plus five equal?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.