What brings you down but never up?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

After a heavy Thanksgiving meal, the night watchman went to work. In the morning, he told his boss he had dreamed that a saboteur planted a bomb in the factory and that he felt it was a warning. The boss promptly fired him. Worker confused, Why boss fire him?

I can write cow in 13 letters.

Can You?

Find the hidden tiger in the given optical illusion ?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

Find out which of the given views in the picture is accurately the top view of the given pyramid.

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

What is more useful when it is broken?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?