How many terms are in the geometric sequence having a first term 2, a last term 32,and a common ratio 10

Question

This is still arithmetic

Answer 1

a1=2 an=32

d=10

2,12,22,32 a4=32=4th term of an AP with common difference = 10

as a GP r=10 is inconsistent with a1=2 and an=32

GP would be 2,20,200,2000, ... if r=10, and a1=2 There is no an=32

an=a1(r^(n-1)

32 =2(10^(n-1))

16 =10^(n-1)

log16 = n-1

n = log16 +1 = about 2.2

then 32 = the 2.2th term, which doesn't really make sense