Hard Series

What is the next number in this series?

4,12,84,3612....




Similar Riddles

What is the largest number you can write with just 3 digits?

Asked by Neha on 18 Apr 2025


Solve the rebus riddle in the picture below.

Millionaire Riddle

Asked by Neha on 14 Feb 2026

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?

Asked by Neha on 24 Jun 2021


What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

Asked by Neha on 08 Feb 2024

Replace the question mark with the number below given a simple math problem.

Fill the Question Mark

Asked by Neha on 03 Dec 2024

If an electric train is travelling south, then which way is the smoke going?

Asked by Neha on 27 Aug 2025


You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

Asked by Neha on 28 Feb 2024

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

Rope can be stolen

Asked by Neha on 19 Sep 2024

You can see it everyday, But cannot touch it at will. What is it?

Asked by Neha on 17 May 2021


What is black when you buy it, red when you use it, and gray when you throw it away?

Asked by Neha on 06 Jan 2021

Hot Articles

Amazing Facts

Rubik’s Cube

The inventor of the Rubik’s Cube didn’t realize he’d built a puzzle until he scrambled it the first time and tried to restore it.