Question

plz plz help me plz..............

Answer 1

An= 23(6)^n-1

23-17=6

17-11=6.

r=6

a1=23

Answer 2

a = 23

d = T2 - T1 = 17 - 23 = - 6

Tn = a + (n-1)d

= 23 + (n-1)(-6)

= 23 - 6n + 6

= 29 - 6n

General term of given AP = 29 - 6n