Question

sum of 1+3+5+7...... upto n terms

Answer 1

Let's write it like this:

1 +3+ 5 +...+(2n-1)=S
(2n-1)+(2n-3)+(2n-5)+...+1=S

Answer 2

notice that the nth term of the sequence is 2n-1

Answer 3

right?

Answer 4

@shreeya13