Question

Find the sum of series to n terms 1.1 +2.3+3.5+4.7+......Upto n terms

Answer 1

Answer:

Sₙ = n/2 (1+1.2n)

Step-by-step explanation:

1.1 +2.3+3.5+4.7+......Upto n terms

a = 1.1 d = 2.3 - 1.1 = 1.2

Sₙ=n/2 [2a+(n-1)d]

=n/2 [2×1.1+(n-1)×1.2]

=n/2(2.2+1.2n-1.2)

=n/2 (1+1.2n)

Answer 2

Answer:

Sum of total series is = n/2(1+1.2n)

Thanku ☄️