Question

4+7+10+13+......sum of the 12 term of this a. p is ​

Answer 1

34

because 10 11 10 hahahahaha

Answer 2

Answer:

$246$

Step-by-step explanation:

$n=12$

$a=4$

$d=a_2-a_1$

$d=7-4$

$d=3$

$S_n=\frac{n}{2} (2a+d(n-1))$

$S_1_2=\frac{12}{2} (2(4)+3(12-1))$

$S_1_2=6(8+3(11))$

$S_1_2=6(8+33)$

$S_1_2=6(41)$

$S_1_2=246$

Hence the sum is 246