Number Trivia

Can you find out which number multiplied by itself will give the output as 12345678987654321?




Similar Riddles

Can you replace the question mark with the correct number?

Fill in the Question Marked Space

Asked by Neha on 09 Mar 2024


A fresh card pile is taken out of a box (the pile has 54 cards including 2 jokers). One joker is taken out and then the cards are shuffled for a good amount of times. After shuffling, two piles are made by dividing that one pile.



What is the possibility that one of the piles will have a card sequence from A to K in order?

Card Mixing Riddle

Asked by Neha on 04 Apr 2021

What does this below rebus puzzle mean?

Personality Rebus Puzzle

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I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

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What is red and smells like blue paint?

Asked by Neha on 22 Jul 2025

Can you place three balls such that the equation shown in the picture holds true?

Place the Balls

Asked by Neha on 07 Mar 2024


You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?

Asked by Neha on 07 Aug 2023

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

Asked by Neha on 12 Feb 2022

You can win me and lose me but never buy me
You can not eat me and never want to part with me
I can make you cry or bring you joy
I am not a machine and definitely not a toy
You keep me but i am not forever just yours
You might find me in a case or on a shelf next to a vase
I am hard and i am tall if you bump me i am sure to fall
I am made of different materials and am at many events
If your lucky and fight hard I might be yours
What am I ?

Asked by Neha on 11 May 2021


What does Alexander the Great and Winnie the Pooh have in common?

Asked by Neha on 17 Jul 2025

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Amazing Facts

Challenging

There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.