First term and common difference of on A.P.are 6 and 3 respectively; find S_(2r) a=6 d=3 S_(n)=?
Answers
Answered by
0
Step-by-step explanation:
Given a=6d=3
S
27
=
2
n
[2a+(n−1)d]
S
27
=
2
27
[2×6+26×3]
=
2
27
[12+78]
=
2
27
[90]
=1,215 (Answer)
Similar questions