**Solution:**

We have integers

We have integers

No. of integers that are multiple of

Let’s say the no. of integers that are multiple of 9 be .

The nth term

From 1 to 1000 , the no. of multiples of 9 is 111 .

The multiple of 2 and 9 both are .

Let’s say that be the no. of terms in above series.

No. of multiples of 2 or

The required probability