8. Find the sum of first 22 terms of an A.P. in which d = 7 and a 2 is 149.
Answers
Answered by
1
Step-by-step explanation:
Sn= ?
n= 22
d=7
a= 149
Sn= n/2 [2a+(n-1)xd]
=22/2 [2x 149+(22-1) x 7]
= 11 [ 298+20 x 7]
= 11 [ 298 + 140 ]
= 11 x 438
=4818
Answered by
1
Answer:
ya ur answer is here
Step-by-step explanation:
Plz thank my answers
Attachments:
Similar questions