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Numbers
Numbers are our way to quantify, label, and organize the world around us in a logical manner. However, the systems used to obtain this goal differ geographically, historically, and by relative utility. All questions pertaining to numbers, including historic labeling systems, bases of numerical systems, constants, and the various ways they're grouped together, should be placed into this category.
46,867 Questions
What are at least facts that the ancient Romans made in the field of mathematical advancement?
1 They modified the Etruscan numeral system and called it their own
2 They had a symbol for zero which was N
3 They never used the zero symbol because it wasn't needed
4 They can pride themselves that many mathematical terms are in Latin
5 They introduced weights and measures
6 They needed mathematics for navigational purposes
7 They needed mathematics for civil engineering purposes
8 They used the properties of gravity in their water viaducts
9 They gave names to distant planets and knew about astronomy
10 They introduced a 12 month year
11 They can claim that their numeracy system was most advanced at the time
12 They can claim that algebra was derived from Roman numerals
13 They introduced at the time a unified currency system
14 They needed only 1 prime number in their main 7 symbols
15 They had a secret system of numeracy that has never been decoded
16 They were military masters of geometrical formations in warfare
17 They once had a brilliant mathematician and Emperor whose name was Julius Caesar who gravely miscalculated the Ides of March
QED by David Gambell
How do you write the number 512996 in words?
512,996 = five hundred twelve thousand, nine hundred ninety-six.
Why is any whole number rational?
-- Any number that can be written as the ratio of two whole numbers is a rational number.
-- Any whole number can be written as the ratio of that number to ' 1 ', so it's rational.
Is .239… a rational or integer?
It is a rational because it can be expressed as the quotient of two integers
Just multiply two or more odd prime numbers, for example:
3 x 3 = 9
7 x 11 x 13 = 1001
What are all the prime numbers 1- 500?
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97 101 103 107 109 113 127 131 137 139 149 151 157 163 167 173 179 181 191 193 197 199 211 223 227 229 233 239 241 251 257 263 269 271 277 281 283 293 307 311 313 317 331 337 347 349 353 359 367 373 379 383 389 397 401 409 419 421 431 433 439 443 449 457 461 463 467 479 487 491 499.
Is 4.1768299 rational or irrational?
if it stops, or repeats its rational, if it keeps going it's irrational
so if the last 3 numbers are ...299 then it is rational and be written as
41768299 / 10000000
each zero for each corresponding space
1-100 prime and compositeshow the numbers to 1-100?
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97 are the prime numbers in that range. Other than one (which is neither) the rest are composite.
Why can there not be a prime number that is also a square number?
Square numbers, greater than 1, have more than two factors.
What are the prime numbers between 43 and 200?
The numbers 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197 and 199 are prime (including the boundaries).
No, 154 is not a prime number.
Any number that ends in 0, 2, 4, 6 or 8 is an even number, and no even number (apart from 2) is prime.
Factors of 154 include 2 x 77, 11 x 14 and 7 x 22.
What are the example of non integers?
1/2 is NOT an integer, 1/3 and the number Pi are not integers either.
The Boltzman's constant is the physical constant relating to temperature to energy.
What are the differences between the binary and the decimal numbers?
Binary is base 2, decimal is base 10. Base 10 positions from the decimal point are tens, hundreds, thousands, etc etc. - each one ten times the previous. Base 2 positions from the decimal point are twos, fours, eights, sixteens etc etc - each one is two times the previous. In base ten there are 9 digits plus zero In base two there is one digit (1) and zero. Sixteen in base ten is 16, in base two it is 10000. Eighteen is 18 and 10010 respectively.
