Question

how many three digit numbers are divisible by 3​

Answer 1

to find the divisivle no by 3 we have to add the digit . eg:2+2+2-9

Answer 2

Answer: 300

Step by step explanation:

this is an AP (arithmetic progression) question

Let n terms of three digit be divisible by 3

First three digit number divisible by 3: a = 102

last three digit number divisible by 3 : an = 999

n = ? (to find)

d= 3 (common difference)

an = a + (n-1)d

999 = 102 + (n-1) 3

999-102 = (n-1) 3

897÷3 = n-1

299 + 1 = n

300 = n

Therefore 300 three digit numbers are divisible by 3