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benedicta
Questions (1)
The first and the third term of a GP are 5 and 80 respectively.what is the fourth term.
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Answers (1)
a= 5 T3 =ar^2 5r^2=80 5r^2/5=80/5 r^2=16 r=4 r=4=ar^3=5(4)^3=320
