Five element

The geometric sequence is given by quotient q = 1/2 and the sum of the first six members S6 = 63. Find the fifth element a5.

Correct answer:

a5 =  2

Step-by-step explanation:

q=1/2=21=0.5 s6=63  s6 = q1q61   a1  a1=s6 q61q1=63 2161211=32  a5=a1 q4=32 214=2

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