Math, asked by rajgurukishor58, 5 hours ago

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 ankushsinngh888
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)

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