468, 486, 648, 684, 846, 864.
Oh, dude, I mean, like, there are 4 digits in 1230, right? So you can totally make 4-digit numbers by using each of those digits once. That's like, 4 factorial, which is 24. So, you can totally write 24 different four-digit numbers using 1230 without repeating any digit. Easy peasy!
Most people prefer to write numbers using digits since this is far shorter than writing out the relevant words.
You can easily write 14.2 million dollars in numbers. You can write it as 14,200,000 dollars.
There are 5 choices for the first digit, as any of the 5 given digits can be used. After selecting the first digit, there are 4 remaining choices for the second digit, and 3 choices for the third digit. Therefore, the total number of ways to write a 3-digit positive integer using the given digits without repetition is 5 x 4 x 3 = 60 ways.
120 times.
648
Oh, dude, I mean, like, there are 4 digits in 1230, right? So you can totally make 4-digit numbers by using each of those digits once. That's like, 4 factorial, which is 24. So, you can totally write 24 different four-digit numbers using 1230 without repeating any digit. Easy peasy!
The answer is 3*3*2*1 = 18. If the leading digit is 0 it is not a 4-digit number.
There are essentially three forms:Terminating decimals: 386 or 23.567,Recurring decimals: 36.572343434... (with 34 repeating),Non-terminating infinite decimals: these represent irrational numbers for which the digits after the decimal point go on for ever without falling into a repeating pattern.
No... you can write it to any number of decimal places.
With the small sample provided, it doesn't look as if it is repeating. The problem, however, lies in the "and so forth"; it is not clear what rule you use to write the decimal digits, and depending on what exactly that rule is, it may, or may not, be a repeating decimal. To be "repeating", and therefore a rational number, after a while the same group of digits has to repeat over and over, without end.
333,333.3333 repeating
6.9 billion as a number would be 6,900,000,000. To write it out without digits it would be six billion and nine hundred million.
You would need infinitely many digits to write all numbers. However, to write all whole number (integers) you would need 4243.
6.0014
Oh honey, it's simple math. To write 18.18 repeating as a fraction, you gotta take the repeating part and put it over 9 times the number of digits it has. So, 18.18 repeating becomes 1818/99. Voila!
-- The decimal system (base-10) uses 10 digits to write all numbers. -- The binary system (base-2) uses 2 digits to write all numbers.