We know, first two digit number divisible by 3 is 12 and last two digit number divisible by 3 is 99. Thus, we get\\\\(12,15,18,...,99\\\\) which is an APHere, \\\\(a=12, d=3\\\\)Let there be n terms. Then,\\\\(a_{n}=99\\\\)\\\\(a+(n-1)d=99\\\\)\\\\(12+(n-1)3=99\\\\)\\\\(n=29+1=30\\\\)Therefore, two digit numbers divisible by 3 are 30.