Oh, dude, the closest square number to 9,999 is 100 squared, which is 10,000. I mean, it's like almost there but not quite, you know? So, yeah, 10,000 is the square number just chilling next to 9,999.
82 is not the square of an integer. The closest square number of an integer is 81, which is equal to 9 squared.
An infinite number of ways. 99+9/9 (99+9/9)*9/9 (99+9/9)*99/99 (99+9/9)*999/999 (99+9/9)*9/9*9/9 etc
6 7
999 + 999/999
8,999,999,999,999,999,999,999,999,999,999,999,999,999,999,991 (8 quattuordecillion, 999 tredecillion, 999 duodecillion, 999 undecillion, 999 decillion, 999 nonillion, 999 octillion, 999 septillion, 999 sextillion, 999 quintillion, 999 quadrillion, 999 trillion, 999 billion, 999 million, 999 thousand and 991)
9
82 is not the square of an integer. The closest square number of an integer is 81, which is equal to 9 squared.
9 (92 = 81)
9, 010, 000 comes one after 9, 009, 999.
9 999 999 999
999 = 9*103 + 9*102 + 9
It's over 999 docilion, 999 nonillion, 999 octilion, 999 septillion, 999 sextillion, 999 quintillion, 999 quadrilion, 999 trillion, 999 billion, 999 million, 999 thousand, 999. And that's the biggest number I know.
729 27 x 27 = 729 9 x 9 x 9 =729
9/999=0.09009 10/999= 0.001001
999 is a three-digit multiple of 9
1 000 000 000 - 1. this is 999 999 999.
999 (assuming base ten mathematics)999.If you are allowed to use indices, then 9^(9^9) would be the largest. This equates to a very, very, VERY long number.