Question

If a= 6 , d=3 then sum of 27 terms is ​

Answer 1

Answer:

the answer will 1

Step-by-step explanation:

a×d=6×3=18

18=27

=27/18

=1

Answer 2

a = 6

d = 3

n = 27

$\binom{s}{ \: \: n} = \frac{n}{2}(2a + (n - 1)d)$

$\binom{s}{ \: \: \: 27} = \frac{27}{2} (2 \times 6 + (27 - 1)3$

$\binom{s}{ \: \: \: 27} = \frac{27}{2} (12 + 78)$

$\binom{s}{ \: \: \: 27} = \frac{27}{2} \times 90$

$\binom{s}{ \: \: \: 27} = 27 \times 45$

$\binom{s}{ \: \: \: 27} = 1215$

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