Please help me with this question's solution - Maths - Sequences and Series

Question

Please help me with this question's solution

Chandan chaurasiya · Accepted Answer

Dear student see The solution of question no 16
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5deb2105ec938%20jpg"
style="width: 743px; height: 1023px;"> remaining queries kindly ask
in separate threads regards