Question

The first term and common difference for the A.P. 3,1,-1,-3 is:​

Answer 1

Answer:

first term :- 3

common difference:- -2

Answer 2

Answer:

2

Step-by-step explanation:

Let,

a1 = 3

a2 = 1

a3 = -1

a4 = -3

Now,

d1 = a2 - a1 = 2

d2 = a3 - a2 = 2

d3 = a4 -a3 = 2

Hence d1 = d2 = d3