Can you find out the missing number in the grid?

What four weights can be used to balance from 1 to 30 pounds?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

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?

10+10 and 11+11 can give you the same answer.

Explain how?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

I make two people out of one. What am I?

What does the below rebus riddle means?

I taste better than I can smell. Who am I?

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

why?