Arithmetic Prog...

The $$9th$$ term of an AP is $$499$$ and $$499th$$ terms is $$9.$$ The term which is equal to zero is 

$$8^{th}$$ term of series $$\displaystyle 2\sqrt{2}+\sqrt{2}+0+......$$ will be

Find the sum of all whole numbers divisible by $$5$$ but less than $$100$$.

The $$4th$$ term from the end of the AP
$$-11, -8, -5, ....................49$$  is

If the common difference of an AP is $$-6,$$ then what is $$\displaystyle a_{16}-a_{12}?$$

What is the sum of all 3 digit numbers that leave a remainder of '2' when divided by 3?

The sum of all odd integers between $$2$$ and $$50$$ divisible by $$3$$ is

If the $$5$$th term of an A.P is eight times the first term and $$8$$th term exceeds twice the $$4$$th term by $$3$$, then the common difference is

If $$9^{th}$$ term of an A.P. is $$47$$ and $$16^{th}$$ term is $$82$$, then the general term is

Find $${a}_{25}-{a}_{15}$$ for the A.P $$-6, -10, -14, -18,..........$$