Why do we preferably have round manhole covers and not square ones?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

How many triangles are there in the picture below?

Why do Chinese men eat more rice than Japanese men do ?

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 am I?

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

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?

A cricket has 6 legs, a squirrel has 4 legs and a spider has 8 legs.

In a local zoo, it was found that the total number of legs is 612. Also, there are equal number of each of the above animals/insects.

Can you find out how many animals are there in the zoo?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?