Question

What is the common difference (d)of the A.P 7,1,-5,-11,....​

Answer 1

Answer:

-6

Step-by-step explanation:

Common difference of an AP is difference between two terms

d1 = t2 - t1 = 1 - 7 = -6

d2 = t3 - t2 = -5 - 1 = -6

d3 = t4 - t3 = -11 - (-5) = -11 + 5 = -6

since d1 = d2 = d3

Common difference = d = -6