Number Trivia

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




Similar Riddles

Solve the alphametic puzzle by replacing the alphabet with the number.

S T O R M +
S O L E S
=========
T O W E L
=========

Asked by Neha on 30 Jul 2024


Through your logical capabilities, can you make 7 an even?

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Some friends went on a vacation to a resort. It was raining heavily and it kept raining for thirteen days.

When it rained in the morning, the afternoon was beautiful and when it rained in the afternoon, the day was blessed with a clear morning.

Overall, the friends experienced eleven nice mornings and twelve nice afternoons. Can you find out the number of days they spent on vacation?

Asked by Neha on 08 Jun 2024


In a family supper, a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one daughter-in-law, and one mother-in-law need to sit at a table.

There are only seven chairs available at the place. How many more chairs do they have to borrow so that everyone can sit down together for the suppers if everybody requires a separate chair?

Asked by Neha on 09 Nov 2024

what does the below rebus mean?

Puzzle Understanding

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When monkey rotate the gear, which mark will be hit 1 or 2 ?

Monkey Gear riddle

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A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

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A maths symbol is hidden in the below Bar Graph. Can you decipher it?

Maths Symbol Graph

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I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Asked by Neha on 15 Feb 2022


I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

Asked by Neha on 28 May 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.