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The second and fifth term of a geometric progression are 21 and 567 respectively. Find the first term and the common ratio of the progression

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  1. the 5th terms is the 3rd after the 2nd term, so their ratio is r^3. Thus,

    r^3 = 567/21 = 27
    r = 3
    a = 21/3 = 7

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  2. Chu

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  3. If 8x,y-4 are in A.P find p and q

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