Can you find the company name in the pictogram below?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

The more you take me, the more you leave me behind.
Who Am I?

What seven-letter word has hundreds of letters in it?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

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

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Which wheel of car does not rotate when you turn your car right?

Can you move 2 matchsticks to form four equal sized squares.