Question

find common difference of following AP 400,370,340,....​

Answer 1

Answer:

-30

Step-by-step explanation:

370=400+(2-1)d

-30=d

Answer 2

a1=400

a2=370

a3=340

so,

a2-a1=370-400=-30

a3-a2=340-370=-30

common difference is -30