If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?

I can be cracked, made, told, and played. What am I?

It is always ahead of me yet I can never see it. What is it?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

You need to arrange three 7 and mathematical symbols to form number 1?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?