Question 9
The 9 th term of an arithmetic progression is 4+5p and the sum of the first foru term of the progression is 7p -10, where p is a constant. Give that the common difference of the progression is 5, find the value of p
Question 10
The third term of a geometric progression is 16, the sum of the third and fourth term is 8. Find
a) The first term and the common ration of the progression
b) The sum to infinity of the progression.
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