Question

please answer the question please
Arithmetic Progression​

Answer 1

Step-by-step explanation:

• Let ,a1,a2,a3.........a7 are in A.P whose common difference is d . a4=3a1 a1+3d=3a1 or,3d=2a1 Again, a7=2a3+1, a1+6d=2a1+4d+1 2d=a1+1 4a1/3=a1+1 or,4a1=3a1+3 or,a1=3 and common difference is 2