1. In an A.P, the difference between the 8th and the 4th terms is 20 and the 8th term is -1½ times the fourth term What is (1) the common difference (11) first term of the sequence ?
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SURUSUTSGIDUSF r yir rtei yivye tid yid iyd viyddivydyi idytis ydi tus tuectsucstvutus tus
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