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

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

What can you deduce from the following BrainBat?

CRY
LMKI

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

Imagine you are in a room with no windows or doors. How will you get out?

You are given 16 witch hats. The hats are divided in four different colours – red, blue, green and yellow. Every colour has been assigned to four hats. Now each of the hat will be glued with a label of an arithmetic sign – ‘+’, ‘-‘, ‘x’ or ‘/’. But you can label one sign only once on one colour. In such an arrangement, the hats can be uniquely defined by its colour and symbol.

Can you arrange all the 16 hats in a 4x4 grid in a fashion that no two rows and columns have a repetition of colour or sign?
We have arranged four hats in the below picture to assist you.