Complete the following series. It.s very logical:

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

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

What does below Rebus say?

XLR8

Solve the equation in the image by looking at the pattern closely.

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

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

Take one out and scratch my head, I am now black but once was red. What am I?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

Can you find the six hidden animals in the picture below?

Steffi's daughter Jazelle needs to be picked up from school every day.
Steffi asks one of her colleagues to pick up Jazelle from the school. Steffi devised a password system to confirm that Jazelle goes with the correct colleague only.

The password on Monday was SJM16.
The password on Wednesday was TAW39.

What will the password be for Friday?