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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
Is seven squared an example of an irrational number?
No because 7 squared equals 49 which is a rational number but the square root of 7 is an irrational number
What is the answer to 5294.6 rounding it up to a hundreds?
It is 5300 when rounded to the nearest hundred
The number represented by "1 followed by 100 zeros" or 10^100 is a googol (not google, which is a search engine!).
What are 20 or more mathematical terms beginning with M and their meanings?
1 Major or minor arcs, sectors and segments are parts of a circle
2 Midpoint of a line segment is at its center
3 Minus is less then zero and also means to subtract
4 Magnitude is a measure of intensity
5 Maximum is the highest limit
6 Minimum is the lowest limit
7 Mirror image is a symmetrical reflection
8 Mode is what occurs mostly in a data set
9 Median is the middle value of numerical data in ascending order
10 Mean average is the sum of numbers divided by how many there are
11 Multiplication of 2 or more numbers results as their product
12 Multi-choice math questions usually have only one possible answer
13 Mental arithmetic needs no pen, paper or calculator
14 M is the Roman numeral for 1,000
15 Million is 1,000,000 in figures or 1.0*10^6 in scientific notation
16 Mixed numbers are a mixture of integers and fractions
17 Mile is a distance of 1760 yards or 5280 feet
18 Minute is 60 seconds or 1/60 of a hour
19 Meter is 100 centimeters or 1/1000 of a kilometer
20 Multi-sided flat shape is a polygon with 3 or more closed sides
21 Millennium is a period of 1000 years
22 Monomial is an expression containing only one term
23 Mensuration is the geometrical magnitude of length, area and volume
24 Money is used in the transaction of goods
25 Mutual exclusive events can't happen at the same time in probability
26 More or less symbols are > and < respectively
27 Mass is a measurement of weight
28 Maps are drawn to a scale factor
29 Measurements can be in metric or imperial units
30 Magic squares add up to the same sum across, down or diagonally
The ancient Romans probably worked them out as follows:-
MDCCLXVIIS+SIX = MDCCLXXVI => 1767.5+(10-1.5) = 1776
MDCCLXVIIS+VIIIS = MDCCLXXVI => 1767.5+8.5 = 1776
Note that the rules as we know them to day now governing the Roman numeral system had nothing to do with the ancient Romans because they were introduced during the Middle Ages.
QED
Nowadays the modern conversion of 444 into Roman numerals is now considered to be CDXLIV which doesn't lend itself quite easily to mathematical calculations but there exist historical evidence to suggest that the ancient Romans would have calculated the equivalent of 444 on an abacus calculating frame as CCCCXXXXIIII and then logically abridged it to IVLD thus facilitating the required calculations as follows:-
MDCCLXXVI+CCCCXXXXIIII = MMCCXX => 1776+444 = 2220
MDCCLXXVI+IVLD + MMCCXX => 1776+(500-56) = 2220
MDCCCLXXVI-CCCCXXXXIIII = MCCCXXXII => 1776-444 = 1332
MDCCLXXVI-IVLD = MCCCXXXII => 1776-(500-56) = 1332
Note that in mathematics 1776-(500-56) becomes 1776-500+56 = 1332 and that negative and positive numerals once went in opposite directions somewhat similar to today's number line.
QED
What effect does a large positive starting number have on the sequence?
I have no idea what that even means... Why am I answering this?
What number is 7 000 000 000 000 945 175 742?
Seven sextillion nine hundred and forty five million one hundred and seventy five thousand seven hundred and forty two.
Does the prime factorization of a composite number includes prime and composite numbers?
yes you are supposed to circle the prime#s and divide the composite
Is 8 quarts greater than 13 pints?
There are 2 pints in one quart. Therefore, 8 quarts is equal to 8 x 2 = 16 pints. This is 3 pints greater than 13 pints.
XCI The roman numeral of 91 = XCI In Roman numerals, C=100, X=10, and I=1. You put the lower number before the higher if you're subtracting it, and after if you're adding it. So 91= XCI
