-99
There are 900 three-digit numbers, all of which are between 99 and 3,000.
8 ... they are 20, 30, 40, etc on up to 90
15 + 17 + 19 = 3 x 17 = 51
88
Every integer from 20 to 99 qualifies; therefore there are 99 - 19 or 80 such numbers.
In general, the numbers form 21-99 are hyphenated; ninety-seven
There are 49 even numbers between 1 and 99.
First number is 20 and last is 99 so 20 = 1 then 21 = 2 then 29 = 10 So from 29 take 19 to make 10 then apply to 99 as in 99 - 19 = answer 80
-99
It is hyphenated, as asked, eighty-four. Numbers from 21 to 99 are hyphenated when spelled out, as are combined ordinal forms such as one hundred-thousandth, one fifty-fifth, and so forth.
99
There are 900 three-digit numbers, all of which are between 99 and 3,000.
There are 99 numbers between 0 and 100.
8 ... they are 20, 30, 40, etc on up to 90
15 + 17 + 19 = 3 x 17 = 51
There are 900 three digit numbers between 99 and 3,000 - ranging from 100 to 999