Question

Find the sum 22 items of an a p in which d=22 and a22=149

Answer 1

$a22 = 149 \\ a1 + (22 - 1)d = 149 \\ a1 = 149 - 21 \times 22 = - 313 \\ \\ s22 = \frac{22}{2} \times (a1 + a22) \\ = 11 \times ( - 313 + 149) = - 1804$

Answer 2

here is ur answers mate..........