Question

if a=16, T5=81 then find common ratio r
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Answer 1

Answer:

r = 1

Step-by-step explanation:

hope that it is helpful

Answer 2

Solution:

Tn = ar^(n-1)

81 = 16 r^(5-1)

81 = 16 r^4

81/16 = r^4

r^4 = 81/16

r = 4√(81/16)

r = 3/2 or 1.5

Hence, the common ratio is 3/2.

Hope this will help you.