Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Which alphabet letter is a question?

A charming young lady was approached by a kind looking old woman in a restaurant. The old woman said to her, 'You look exactly like my younger daughter. Sadly she passed away a couple of months back. Could you do me a favor and say 'Goodbye, mother' with a kind smile on your face when I leave?

The young lady agreed for the same and said, 'Goodbye, mother' when the old woman left. Soon after, she got the most disengaging shock of her life.

Can you guess what the shock was?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

What word begins and ends with an E, but has only one letter?

What is the largest number you can write with just 3 digits?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?