What is the sum of the first n term of the 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 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 ,.......

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.

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 2020 terms of the arithmetic sequence 1/2020 , 3/2020 , 5/2020 ,.......?

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

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

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

Consider an arithmetic sequence with common difference 20. If the sum of reciprocals of two consecutive terms of this sequence is 1//24 find the first term of the arithmetic sequence .