I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Find the missing number in the image below.

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

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

Spot what is wrong here in below Picture?

Before Mount Everest was discovered, what was the highest mountain in the world?

Why Aeroplane windows are round?

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?