Question: Find its sum using geometric series test ( including finding r value ) and the formula initial term/1-r 8.) bn . where by is a

 Find its sum using geometric series test ( including finding r

Find its sum using geometric series test ( including finding r value ) and the formula initial term/1-r

value ) and the formula initial term/1-r 8.) bn . where by

8.) bn . where by is a geometric sequence with positive 1=1 terms. It is known that b, =15 and b4 = 3

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