468, 486, 648, 684, 846, 864.
18, if leading 0s are disallowed.
Most people prefer to write numbers using digits since this is far shorter than writing out the relevant words.
401
You can easily write 14.2 million dollars in numbers. You can write it as 14,200,000 dollars.
120 times.
18, if leading 0s are disallowed.
648
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
Write the repeating digits over the same number of 9s and simplify: 0.81... has two repeating digits ⇒ the denominator has two 9s, ie 99. ⇒ 0.81... = 81/99 = 9/11
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.
-- The decimal system (base-10) uses 10 digits to write all numbers. -- The binary system (base-2) uses 2 digits to write all numbers.
6.0014