The more of this there is, the less you see. What is it?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

What does below Rebus say?

XLR8

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

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?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.