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Any number multiplied by zero is always zero.

Any number multiplied by zero is always zero.

Multiplying is like adding a number that many times. Multiplying by zero means adding it no times at all — so you're left with nothing, which is zero.

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The Romans had no symbol for zero. The Romans had no symbol for zero. A 'googol' is a 1 followed by one hundred zeros. A 'googol' is a 1 followed by one hundred zeros. A “googol” is the number 1 followed by 100 zeros. A “googol” is the number 1 followed by 100 zeros. Numbers help us tell how many things there are. Numbers help us tell how many things there are. Zero is the only number that can't be written with Roman numerals. Zero is the only number that can't be written with Roman numerals.