What happened when the wheel was invented?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

What kind of tree can you carry in your hand?

The owner of a popular clothing store comes up with his own method of pricing items. A vest costs $8, socks cost $10, a tie costs $6, and a blouse costs $12. Using the owner’s method, how much would a pair of underwear cost?

What is the next number in this matchsticks series riddle?

There is a place where if I stand up straight, I will still be considered sideways.

Why Wine Glass Stem is so long?

What Does this text mean:

important=important

what does this picture(rebus) riddle means ?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?