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 ofthe first 5 terms ofthe arithmetic sequence 1, 3, 5, 7,……... ?

Find the sum of the first n terms of the arithmetic sequence 1/n,3/n,5/n,7/n ,.......

16 added to the sum of the first few terms of the arithmetic sequence 9,11,13, ........... gave 256 . How many terms were added?

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.

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

Arithmetic sequence is 1/7,2/7,3/7… What is the sum of the first 7 terms of this sequence?

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

Write the first integer term of the arithmetic sequence 1/7,2/7,3/7…

What is the remainder on dividing the terms of the arithmetic sequence 100,107,114.... by 7?