Question

if the first term of an ap is -5 and common difference is 2 find the sum of first 6 terms

plssss helppp it is urgent​

Answer 1

Step-by-step explanation:

a = -5

d = 2

Sn = n/2 [2a + (n - 1) d ]

S6 = 6/2 [ 2 (-5) + ( 6 - 1) 2]

S6 = 3 [ -10 + 10 ]

S6 = 3 * 0

S6 = 0