Question

for the following ap, wrie the first and common difference a. 1,-1, -3, -5​

Answer 1

Answer:

first number of ap series (a)= 1

common difference = -2

Step-by-step explanation:

common difference = a1 -a= (-1) - 1 = -2

a2 - A1 = (-3) - (-1) = -2

so common difference is -2