Number Trivia

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




Similar Riddles

A very interesting trivia question for all.

Why do men's shirts have their buttons on the right side and women's have buttons on the left-hand side?

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Can you count the number of triangles in the picture below?

Count the Triangle

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Find the 8 in the below-given Image.

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If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

Asked by Neha on 16 Oct 2025

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

Asked by Neha on 16 Sep 2023

It was a dark stormy night and a couple were in a car driving madly to a city. The car broke down and the husband had to go get help from someone who spoke his language. He was afraid to leave his wife alone in the car so he locked the car before leaving. When he came back, the car was in the same state as he had left it but his wife was dead, there was blood on the floor and there was a stranger in the car. What happened?

Asked by Neha on 02 Aug 2024


You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

Football World Cup 2014

Asked by Neha on 22 Aug 2021

We can be boring,Or interesting.
We can be long,Or short.
We can have pictures,Or just words.
Many love us,But many also hate us.
What are we?

Asked by Neha on 04 Mar 2023

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Make the Square

Asked by Neha on 12 Apr 2021


You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?

Asked by Neha on 06 Apr 2023

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Gambling

In Canada, a mathematical puzzle must be solved in order to win the lottery to classify it as a “game of skill” not gambling.