Find the hidden panda in the image below.

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

John is the son of Jacob.
So,
Jacob is the_____of John's father?

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

What number divided by 4 is the same as that number minus 4?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

Why is the Hole below a Lock?

I don't get anymore wetter, no matter how much rain falls on me.

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?