What is the value of the fourth term in a geometric sequencefor which a, = 10 and r= 0.5?

Solution
[tex]\begin{gathered} T_n=ar^{n-1} \\ \\ T_4=10(\frac{1}{2})^{4-1} \\ \\ T_4=10(\frac{1}{8}) \\ \\ T_4=\frac{5}{4} \\ \\ T_4=1.25 \end{gathered}[/tex]The answer is
[tex]1.25[/tex]