Question

find the sum of following series up too n term .1.4+3.04+5.004+7.004

Answer 1

Find the sum of following series up too n term .1.4+3.04+5.004+7.004the answer is 16.448

Answer 2

so we see the terms are in AP

with common difference of 2 

so using sum formula we get 

4/2{2x1.4 + 3x2}

= 2(2.8 + 6)

= 17.6 ANSWER