how many three digit number are divisible by 3 Share with your friends Share 0 Zehra answered this 300 0 View Full Answer Vignesh answered this the last 3 digit no. divisible by 3 is 999. the first is 102. so, a1=102 d=3 a(n)=999 a(n)=a+(n-1)d 999=102+(n-1)3 807/3=n-1 269=n-1 n=270 so, there are 270 three digit no divisible by 3 1 Hema answered this 999 & 963 0 Ji 🖤 answered this 963 and 999,300 0 Deepali answered this 999, 963 and300 0