There are an infinite list of different numbers, but only 90 of them are integers (whole numbers).
It is: 90% = 9/10
45 and 45
90 and any factor of 90 for example, 10 and 90
There are 90 two-digit numbers... starting with 10 and ending with 99.
1 & 90 or 2 & 45 or 5 & 18 or 9 & 10
These pairs of numbers, when multiplied, equal 90: (1, 90) (2, 45) (3, 30) (5, 18) (6, 15) (9, 10)
There are an infinite list of different numbers, but only 90 of them are integers (whole numbers).
10
It is: 90% = 9/10
This is only possible if one of the digits is equal to zero. There are 90 3-digit numbers with a zero in the 10's place, and 90 3-digit numbers with a zero in the 1's place - and 9 numbers that have both a zero in the 10's place and a zero in the 1's place; these would be counted double if you just add the first two. So, you get: 90 + 90 - 9 such numbers.
There are 10 decimeters to a meter, so 90 meters equal 900 decimeters.
There are 90 such numbers.
45 and 45
It is 90 and 10 this is easy ill show you 90 + 10 = 100 90 - 10 = 80 If you got that wrong than it is ok just always check here for answers
3 x 30 = 90
The list is infinite. Here are some of them: 60, 90, 120, 150, 180, 210, 240, 270.