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Two A.P share the same first and last terms. The first A.P has 16 terms with a common difference of 6. If the common difference of the second A.P is 5 find the number of term in the second W.P

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16 terms means 15 differences
... 6 * 15 = 90

90 / 5 = 18

18 differences means 19 terms

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