Question

Numbers divisible by either 9 or 11 between 400 & 700

Answer 1

Let us calculate the least common multiple and that will take by number between 400 to 700 which is divisible by 9 or 11.

Some of them are 450/9, 540/9, 630/9, 440/11, 550/11, 66/11, is the numbers divisible by either 9 or 11 between 400 & 700.

So, the values are finding according to the numbers taken back with the factors 9 or 11.

Answer 2

Thank you for asking this question:

We will assume as the least no divisible by 9 is 405

And the most is 693

So AP will be formed

405,414,423..........................693

The formula for nth term is given by:

an=a+(n-1)d

So, 693=405+(n-1)9

288=(n-1)9

32=n-1

So, n=33

If there is any confusion please leave a comment below.