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Because we have ten digits and have learned to count in tens. We use the numbers 0, 1, 2, ..., 9: that is ten different digits.

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Q: Why is it a base 10 instead of base 9?
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What mathematical system uses base 2 instead of base 10?

It is called the binary system. It uses only 2 numbers. The numbers are "0" and "1" This is a computer language. Base 10 is our regular number system... consisting of 10 numbers from 1-9 including 0


What is 9 in binary sequence?

9 (base 10) = 1001 (base 2)


How do you count using base 5 numbers?

1,2,3,4,10,11,12,13,14,20,21,22,23,24,30,31,32,33,34,40....It's just like counting in base 10 except when you get to a 4 (instead of 9) you carry over. There should never be a number over 4 in base 5.


What is 9 as a exponent of a power of 10?

9 ≈ 10^0.9524 lg 9 ≈ 0.9524 (where lg is log to base 10).


Why might ancient measuring systems have used base 60 instead of base 10?

hhh


What is 01110 in base 10 digits?

9


How it is 10 base 10 equals A base 11?

Base 10 is based on groupings of 10, and the digits are called 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. Base 11 is based on groupings of 11, and the digits are called 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, and A. A is used instead of 10 to avoid confusion, because it is a single digit, not two digits that actually have the base 10 value of 11. Notice in 10 base 10, you are using 2 digits, a 1 in the tens place and a 0 in the ones place. In base 11, you only need 1 digits, an A, which has the same effective value.


What base did the greek number system use?

They use a base 10 system


What is 944229 divided by A in base 11?

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What started metric measure?

Intelligence and the ease of of using base 10 instead of base 12 or whatever.


What are the first ten counting numbers for base eight?

01 02 03 04 05 06 07 10 (= 8 in base 10) 11 (= 9 in base 10) 12 (= 10 in base 10)


What is the area of a parallelogram with a base of 9 inches and a height of 10 inches?

The area of a parallelogram with a base of 9 inches and a height of 10 inches is 90 square inches.