The first term and the common difference of an A. P, is 10 and 5 respectively. Complete the following activity to find the sum of first 30 terms of the A. P.
Please solve the boxes only
Attachments:
Answers
Answered by
27
Sn=n/2[2a+(n-1)d]
S30=30/2[20+(30-1)5]
=15[20+(29*5)]
=15(20+145)
=15*165
=2475
Answered by
17
Please find the answer in the attachment.
Attachments:
tronix404:
Thanka alot!
Your welcome
You're *
Similar questions