Hard Series

What is the next number in this series?

4,12,84,3612....




Similar Riddles

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

Asked by Neha on 01 Oct 2024


What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Asked by Neha on 17 Oct 2023

How can you drop a raw egg from a height onto a concrete floor without cracking it?

Asked by Neha on 27 Jan 2021


I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

Asked by Neha on 25 May 2021

A Japanese ship was en route to a mission on foreign seas. The captain of the ship felt tired and thought of taking a bath. He went for taking the shower and removed his diamond ring and Rolex and kept them on the table. When he returned after taking the bath, he found that the ring and watch were stolen.

He called the five members of the crew whom he suspected and asked them what they were doing for the last 15 minutes.

The Italian cook (with a butcher knife in hand): I was in the fridge room getting meat for cooking.

The British Engineer (with a high beam torch in hand): I was working on a generator engine.

The Pakistani seaman: I was on the mast correcting the flag which was upside down by mistake.

The Indian Radio officer: I was trying to make a contact with the company to inform them about our position.

The American navigation officer: I am on night watch, so I was sleeping in my cabin.

Upon listening to them, the captain caught the lying member. Who do you think stole the valuables?

Asked by Neha on 10 Apr 2024

Can you tell a 3D object that has just two surfaces?

Asked by Neha on 24 Mar 2026


Which country gets ill every time?

Asked by Neha on 14 Feb 2025

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

Asked by Neha on 06 Apr 2022

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

Asked by Neha on 25 Jul 2021


I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Asked by Neha on 25 Jul 2025

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