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A 'googol' is a 1 followed by one hundred zeros.

A 'googol' is a 1 followed by one hundred zeros.

That's a mind-bogglingly big number — even bigger than the number of atoms we think are in the whole visible universe. The company Google was named after it, with a little spelling twist.

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The Romans had no symbol for zero. The Romans had no symbol for zero. 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. Counting numbers go on forever — you can always add one more. Counting numbers go on forever — you can always add one more.