How many zeroes are in the number one quadrillion?

Answer 1

There are two correct answers to this question:

15 (in the USA and in any countries that use "short scale" naming conventions)

Or

24 (in countries that use "long scale" naming conventions)

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The scales goes as follows:

Value in

Scientific notation

| Short Scale Name |

| Value in numerals

Long Scale Name

10 01oneone

10 31,000thousandthousand

10 61,000,000millionmillion

10 91,000,000,000billionthousand million or milliard

10121,000,000,000,000trillionbillion

10151,000,000,000,000,000quadrillionthousand billion or billiard

10181,000,000,000,000,000,000quintilliontrillion

10211,000,000,000,000,000,000,000sextillionthousand trillion or trilliard

10241,000,000,000,000,000,000,000,000septillionquadrillion

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