Best Answer

Whole numbers . . .

All of the counting numbers from 1,000 to 9,999 = 9,000 of them.

Fractions . . .

-- all numerators from 1 to 9 / all denominators from 100 to 999 = 8,100

-- all numerators from 10 to 99 / all denominators from 10 to 99 = 8,100

-- all numerators from 100 to 999 / all denominators from 1 to 9 = 8,100

-- Total fractions = 24,300

Decimals . . .

-- All whole numbers from 1 to 9 plus all 3-place decimals from 0.100 to 0.999 = 8,100

-- All whole numbers from 10 to 99 plus all 2-place decimals from 0.10 to 0.99 = 8,100

-- All whole numbers from 100 to 999 plus all 1-place decimals from 0.1 to 0.9 = 8,100

-- Total decimals = 24,300

So far, we have a total of 57,600 numbers. But this is way off, for two reasons that I can think of just now:

1). I have not even considered mixed numbers ... combinations of a whole number and a fraction.

Including those would increase the total.

2). Many of the fractions, decimals, and whole numbers constructed in the above way

would be equal to each other.

So, that figure of 57,600 must be seen as a rough approximation of a ballpark

order-of-magnitude estimate. The refinement is left as an exercise for others,

because like a bad investment, I have lost interest.

Q: How many numbers can you make with four digits?

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4! = 24 ■

how make the answer im don/now

3*3*2*1 = 18 of them.

10,000

Ten different digits can be used to make 10C4 = 10*9*8*7/(4*3*2*1) = 210 four-digit numbers. Either numbers starting with 0 are permitted or the 10 digits do not contain a 0.

Related questions

4! = 24 ■

how many numbers exactly have 4 digits ? 8900, 8999, 9000, 9999

how make the answer im don/now

3*3*2*1 = 18 of them.

10,000

Ten different digits can be used to make 10C4 = 10*9*8*7/(4*3*2*1) = 210 four-digit numbers. Either numbers starting with 0 are permitted or the 10 digits do not contain a 0.

With 123 digits you can make 123 one-digit numbers.

you take the four digits and multiply 4 by 4 you get 16 digits

94

Twelve of them.

If the digits are all different then 18. Otherwise, 192.

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