If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Can you find out which options fits best with the missing column?

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

Can you decipher the two rows to find the hidden word?

Two natural numbers have a sum of less than 100 and are greater than one.

John knows the product of the numbers and Jacob knows the sum of numbers.

The following conversation takes place between them:
John: 'I am not aware of those numbers.'
Jacob: 'I knew you wouldn't be. I am not aware myself.'
John: 'Now I know them!'
Jacob: 'Now I know them, too!'

What are the two numbers?

John was piloting a plane behind a car but was never able to overtake it. Why?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

Can you decipher the below rebus?

PBLUESAISNUERSES