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What is the common difference of an A.P. in which a21-a7=84 |
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Answer» nisha tera galat hai The Common difference of AP in which a21-a7=84 is 6. a+20d-a+6d=84.26d=84d=6 a + 20d - a - 6d =84 14 d = 84 d = 84 / 14 d = 6 a+20d-a+6d=84d=6 d=6 |
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