Question

FIND THE 20TH AND NTH TERMS OF THE GP 5--2 5-4 5-8

Answer 1

a = 5/2, r = 1/2

20th term = (5/2)(1/2)^19

15

4.0

= 5/1048576

nth term = (5/2)(1/2)^(n-1)

= 5/2'n

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