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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 the cube roots of an imaginary number in trigonometric form?

z = y i where y is a real number

1: z^(1/3) = y^(1/3) (cos(30 deg) + i sin(30 deg))

2: z^(1/3) = y^(1/3) (-sin(60 deg) + i cos(60 deg))

3: z^(1/3) = y^(1/3) (- i)

What is the mininum number of edges that a pyramid can have?

Assuming a triangular base, i.e. a tetrahedron, the minimum number of edges is 6.

27335356 which is a prime number?

27335356 is a composite number, not a prime. Its prime factors are 2x2x41x166679, and all of its factors are 1, 2, 4, 41, 82, 164, 166679, 333358, 66671, and 27335356.

How do you determine the date of Manufacturer of an automobile by the number plate?

The VIN number located on the drivers side, inside the vehicle, next to the windshield will tell you the year of manufacture. The 10th digit tells you the model year. http://researchmaniacs.com/VIN/VIN-Decoder.html

What number is prime and composite?

A composite number has more than 2 factors.

A prime number has only has 2 factors which are itself and one.

Note that 1 is neither a composite number or a prime number because it has only one factor.

Is whole number irrational number?

irrational numbers are those which are inexpressible as ratios of two whole numbers. any whole number w can be expressed as w/1.

How do you determine if 1041 is a prime number?

Since its digits add up to a multiple of three, it's divisible by three. That means it's not prime.

How do you do least common factor?

The least common factor of any set of positive integers is 1.

Is there a number such as 90024937956458821436569?

Yes there is, and it is just over 90 sextillion.

What will you get if you divide two negative number?

A positive because two negatives cancel each other out to create a positive.

Example: -40/-10= 4

Is 29.2992999 rational or irrational?

29.2992999 is the ratio of 292,992,999 and 1,000,000 . It's perfectly rational.