No.
It is 90.
From 10 to 99 (inclusive) there are 90 numbers.18 are evenly divisible by 5.Therefore 72 are not.
138 is not divisible by 18.
18 is not divisible by 5 and 7.
20 is not divisible by 18.
-- Neither 2 nor 5 is divisible by 18. -- 18 is divisible by 2, but not by 5.
90 is divisible by: 1 2 3 5 6 9 10 15 18 30 45 90.
18
5
5715 is not divisible by 2: the last digit is not an even number or 05715 is divisible by 3: as the last two digits when added together is a multiple of 35715 is divisible by 5: as the last digit is a 5 or 05715 is divisible by 9: as if u added all the digits of the number it will be divisible by 9, in this case 5 +7+1+5=18 and 18 is a multiple of 95715 is not divisible by 10: as the last digit is not a 0
All multiples of 18 are divisible by 9. Not all multiples of 9 are divisible by 18.