Hard Series

What is the next number in this series?

4,12,84,3612....




Similar Riddles

The pound is not a finish.

We are sharing a few instructions below, which you have to use in any suitable order to modify the above sentence such that the end sentence is a scientific fact.

- Eliminate a letter and supplement another in its place.
- Take away one word.
- Remove one letter from one word.
- Get rid of two letters from one word.
- Swap a word with its antonym.

Asked by Neha on 03 May 2025


Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

Asked by Neha on 17 May 2021

Here is a conversation between a couple who both are software professionals.

Husband: Hey! What is your date of birth?
Wife Replied Angrily: It is 591062400
Husband after doing some calculations replied, "Got It".

What is the DOB of the wife?

Asked by Neha on 20 Feb 2025


What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

Asked by Neha on 12 May 2023

What time is it when an elephant sits on a fence?

Asked by Neha on 10 Jul 2025

What jumps when it walks and sits when it stands?

Asked by Neha on 27 Oct 2025


What do you get if you add 2 to 100 four times?

Tricky Maths

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If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Asked by Neha on 25 Sep 2023

A Club organizes a Running Race, and John, Jacob, Minda, and Tony participated.

The results are as follows

John beats Jacob
Minda beats Toni
Toni beats John

Who came first in the race?

Asked by Neha on 23 May 2024


Prove that the below maths equation is true.

8 + 8 = 91

Asked by Neha on 16 Aug 2021

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Crossword puzzles

In the 1920s, people feared that crossword puzzles would contribute to illiteracy.