Sum from 1 to n of (2n-1) = n2 (2*500-1)=999 (500)2=250,000
There are 999 whole numbers less than 1000. Whole numbers are all the positive integers starting from 1 up to 999. The number 1000 is not included because it is not less than 1000. So, the total count of whole numbers less than 1000 is 999.
Oh, dude, 999 plus 999 is like totally 1998... just kidding, it's 1998. Like, you're basically adding two nines together to get 18, then slapping another nine on there for a grand total of 1998. Math, man, it's wild.
1, 3, 9, 27, 37, 111, 333, 999
999 (whole) numbers. THere are the same number whether they are counted in ascending, descending or other order.
-999
1002
All the numbers from 100 to 999 have three digits, as do all the numbers from -100 to -999, so that's 1800 in total.
NO....
831
Well.. There are 899 999 numbers between 100,000 & 999 999, so basically pick any6 positive whole numbers (1-9) and mix them up. Do this three times, ta da!
There are 999 whole numbers less than 1000. Whole numbers are all the positive integers starting from 1 up to 999. The number 1000 is not included because it is not less than 1000. So, the total count of whole numbers less than 1000 is 999.
Those four numbers are all whole numbers.
Oh, dude, 999 plus 999 is like totally 1998... just kidding, it's 1998. Like, you're basically adding two nines together to get 18, then slapping another nine on there for a grand total of 1998. Math, man, it's wild.
Notwithstanding todays modern conversion of 999 into Roman numerals which is now considered to be CMXCIX inasmuch that the ancient Romans would have probably added together the equivalent of 777 and 999 in either of the following formats:- Abridged format: DCCLXXVII+IM = MDCCLXXVI => 777+(1000-1) = 1776 Elongated format: DCCLXXVII+DCCCCLXXXXVIIII = MDCCLXXVI => 777+999 = 1776 QED
That depends what those nine numbers are. If the numbers are 992, 1, 1, 1, 1, 1, 1, 1, and 1, then it is easy.If the numbers are all 9s, then it can be written 999 + (999 / 999) = 1000.
from 100 to 999 it is 900
499 + 500 = 999