Question

Find the sum of the first 50 terms of the sequence. 1, 3, 5, 7, 9,……​

Answer 1

Answer:

Sum of first n odd natural numbers =n²

Therefore, sum of first 50 terms of the sequence 1,3,5,7,9....

50²=2500

Step-by-step explanation:

Hope it helps.....

Answer 2

Answer:

Given,

1,3,5,7,9,.......

sum of first 50 terms = n/2(2a+(n-1)d)

=50/2(2+(50-1)2)

=25(2+98)

=25×100

=2500

Hence,the sum of first 50 terms of the sequence is 2500