Number Trivia

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




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Let

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What does this mathematical rebus means ?

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If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

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