Number Trivia

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




Similar Riddles

Can you count the number of squares in the given picture?

How Many Squares you Find

Asked by Neha on 13 Feb 2024


In the image given, you can find several triangles. Can you count them all?

How Many Triangles Are There Puzzle

Asked by Neha on 17 Apr 2025

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?

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Decode the movie name from the below picture?

Movie Rebus

Asked by Neha on 26 Aug 2023

The richest man in the city Mr Rechard is kidnapped. James Bond is appointed to the case. At the crime scene, a note is found written by Mr Richard. The note read:

"First of January, Fourth of October, Fifth of March, Third of June."

James Bond knew that somehow, the killer's name was hidden in the note. The following were the suspects:

Jack Richard, the son and the heir of property.
John Jacobson, the employee of Richard.
June Richard, the wife of Richard.

James Bond took only a few moments to deduce the killer's name. Can you tell who was the killer?

Asked by Neha on 03 Jul 2024

What does this Rebus Picture means ?

Rebus riddle with Show on the side

Asked by Neha on 23 Apr 2021


John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

Asked by Neha on 13 Nov 2024

We know that money can be names differently for the purpose it is used for. Some of the examples of money given at following places or for following activities:

In temple = Daan
In school = Fees
During marriage = Dowry
For divorce = Alimony
Paying government = Tax
In court = Fine
Employer to employee = Salary
To kidnappers = Ransom
For illegal reason = Bribe
To civil servant retirees = Pension

Do you know what do we call the money a husband gives to his wife?

Asked by Neha on 12 Jan 2021

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking

Asked by Neha on 01 Jul 2023


A man was just doing his job when his suit was torn. Why did he die three minutes later?

Asked by Neha on 15 Sep 2021

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