Question

4 + 7 + 10 + 13 +... ... Sum of
the 12 terms of this A. P. is​

Answer 1

Answer:

Hey mate!

The answer is 246.

Step-by-step explanation:

Give,

a = 4

d = 7-4

= 3

n = 12

$S_{12}$ = ?

$S_{n}=\frac{n}{2} [2a+(n-1)d]$

$S_{12}=\frac{12}{2} [2*4+(12-1)3]$

$S_{12}=6[8+11*3]$

$S_{12} =6(8+33)$

$S_{12}=6*41$

$S_{12}=246$

∴The answer is 246.

Hope this helps :)

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