The first term in an arithmetic sequence of 100 terms whose common difference is 4 and whose sum is 20300 is

The first term of an arithmetic sequence is 2 and the common difference is 4 . a) Find the sum of the first ten terms of this sequence. b) Find the sum of ten terms from the second term to the eleventh term. .c) Is it possible that the sum of any consecutive ten terms of the sequence is 500 why?

Write the arithmetic sequence with first term 2 and common difference 3.

The sum of first n terms of an arithmetic sequence is n^2+2n Find the common difference.

The second term of an arithmetic sequence is 8 and the common difference is 3. Write the sequence?

What is the sum of first 40 natural numbers? [(1640 , 820 , 410 , 205)] ii) Whât is the sum of first 40 terms of the arithmetic sequences 6,12,18,.....? iii) The sum of first 40 terms of an arithmetic sequence with common difference 6 , is '5120 .' Write down the aigebraic form of this sequence.

The sum of the first 20 terms of an arithmetic progression whose first term is 5 and common difference is 4, is __________.

How many arithmetic progressions with 10 terms are there whose first term is in the set {1, 2, 3} and whose common difference is in the set {2, 3, 4} ?

n, 3n, 5n,... is an arithmetic sequence. a) What is the common difference? b) Prove that the sum of first 'n' terms of this sequence is n^(3) . c) Then find the sum of 15 terms of the sequence 15,45,75,…..

The sum of the first n terms of an AP whose first term is 8 and the common difference is 20, is equal to the sum of first 2n terms of another AP whose first terms is -30 and the common difference is 8. find n

The sum of the first n terms of an AP whose first term is 8 and the common difference is 20 is equal to the sum of first 2n terms of another AP whose first term is -30 and the common difference is 8. Find n.