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Find the 20th term from lest term of the ap 3,8,13...253 |
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Answer» 158 Here d= 5 but if we take añ as a and a as añ Then d=-5An=a+(n-1)d =253+19(-5) =253+(-95) =253-95 =158 T²0= 253+(20-1)×(-5)=253-95=158 158 |
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