Question

In an arithmetic progression (A

  • P , the 9th term is 5 times the 2nd term and the 8th term is 1 more than 10 times the first term. What is the 4th term of the geometric progression (G
  • P whose first term is the second term of AP and whose common ratio is equal to the common difference of AP?
A 448
B 192
C 576
D 1792
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