What is the difference between the sum of the first 20 terms and.the next 20 terms. of the arithmetic sequence 6,10,14,……..?

Calculate the difference between the sum of the first 20 terms of the arithmetic sequences 6,10,14,….. and 15,19,23,…….

What is the 21^(st) term of the arithmetic sequence 21, 20, 19,......?

What is the sum ofthe first 5 terms ofthe arithmetic sequence 1, 3, 5, 7,……... ?

What is the sum of the first 5 terms of the arithmetic sequence 1,3,5,7,........?

What is the sum of the first n term of the arithmetic sequence 1,3,5,7......?

What is the sum of first 2020 terms of the arithmetic sequence 1/2020 , 3/2020 , 5/2020 ,.......?

The sum of the first and 21^(th) terms of an arithmetic sequence is 140.What is the 11^(th) term?

The algebraic form of an arithmetic sequence is 5n+4 a) What is its first term? b) What is the difference of its 10^(th) and 20^(th) terms? c) Can the difference of any two terms of this sequences be 368?

How many terms of the arithmetic sequence '6,10,14, ……….' should be added to get 720?

Write the missing terms in the arithmetic sequence given below 2,6, 10,14,_ ,_ ,_ ,30