# Sum 1-6

Find the sum of the geometric progression 3, 15, 75,… to six terms.

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If the sum of four consective terms of geometric progression is 80 and arithmetic mean of second and fourth term is 30 then find terms? - GP - three members

The second and third of a geometric progression are 24 and 12(c+1), respectively, given that the sum of the first three terms of progression is 76. determine the value of c. - Arithmetic progression 2

The 3rd term of an Arithmetic progression is ten more than the first term, while the fifth term is 15 more than the second term. Find the sum of the 8th and 15th terms of the Arithmetic progression if the 7th term is seven times the first term. - Missing term 2

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The sum of three numbers in GP (geometric progression) is 21 and the sum of their squares is 189. Find the numbers. - Six terms

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