Arithmetic Prog...

If $$\displaystyle l=20,d=-1,n=17$$ , then the first term is :

$$50^{th}$$ term of the  AP. $$2, 5, 8, 11,.....$$ is :

Find the sum of the following APs: $$-37, -33, -29, .....$$ to $$12$$ terms

Find the sum of the following APs: $$2, 7, 12, ......,$$ to $$10$$ terms

In an AP, the $$9th$$ term is $$-72$$. The $$10th$$ term is $$60$$ less than the $$4th$$ term. Find the first term of the AP

Find the sum of the following APs: $$0.6, 1.7, 2.8, ......$$ to $$100$$ terms

The first term of an AP is $$-50$$ and the $$50th$$ term is $$48$$. Find the common difference

The value obtained by subtracting the $$10^{th}$$ term of an AP from the $$17^{th}$$ term is $$56$$. Find the common difference.

The common difference of the sequence $$5,8,11,14,$$ is

In an AP, the $$4th$$ term is $$36$$. The $$21st$$ term is $$108$$ more than the $$9th$$ term. Find the common difference.