How many three digit number are divisible by 7?

Explanation:

Three digits number which are divisible by 7 are: 105, 112,….994

It forms an Arithmetic Progression with common difference (d) = 7

Which has first term (a) = 105(a)

Let 994 be the n the term of the formed AP.

Final Answer:

Hence there is are 128 three digit numbers which are divisible by 7.