If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

If eleven plus two equals one, what does nine plus five equal?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

Which five letter word can be added at the end of below word to form a
valid word?

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If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?