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septillion

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What do you call a number with 22 zeros?

A number with 22 zeros is called a sextillion in the short scale naming system, which is commonly used in the United States and modern English-speaking countries. In the long scale naming system, which is used in some European countries, this number is called a quintillion. In scientific notation, a number with 22 zeros would be written as 10^22.


How many significant figures does 0.0072 contain?

It has 4 significant figures.Significant Figuresà Non-zero numbers are always significant figures.à Zeros are tricky:- If zeros appear before a non-zero (called leading zeros), they are NEVER significant (ex: 0.025)- If zeros fall between non-zero numbers, they are ALWAYS significant (ex: 205)- If zeros come at the end of the number, they WILL be significant only IF there is a decimal present (ex: 250.0)à Exact numbers (or counting numbers) have infinite significant figures. For example, if we count 3 pencils, we know there are exactly 3 pencils. Or, when we say 1 inch = 2.54 cm, we know this is for exactly 1 inch.


What is the advantage of using scientific notation to express numbers that are very small and very large?

Less digits are needed but they still have the same numerical values.


Examples of significant figures?

significant figures are digits of certainty. In other words they are exact numbers. Except zeros are placeholders (not exact) unless if they are in between non zeros. Also zeros at the end of numbers are significant figures if there is a decimal point.


Is 52563744 divisible by 24?

Sol: 24 = 3 x 8, where 3 and 8 are co-primes. The sum of the digits in the given number is 36, which is divisible by 3. So, the given number is divisible by 3. The number formed by the last 3 digits of the given number is 744, which is divisible by 8. So, the given number is divisible by 8. Thus, the given number is divisible by both 3 and 8, where 3 and 8 are co-primes. So, it is divisible by 3 x 8, i.e., 24.