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Find all the integers from 100 to 550, which are not divisible by 9? |
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Answer» The answer is 48 bro. Say thanks to your genius Ykdkxjt5inc epFC HR3y4uhhethd The sum of all integers between 100 and 550, which are divisible by 9 is 16425.Step-by-step explanation:Integers between 100 and 550, which are divisible by 9 are 108, 117, 126 , ....... 549Here, a = 108, d = 9, an(l) = 549By using the formula ,an = a + (n - 1)d549 = 108 + (n -1)9549 - 108 = 9(n -1)441 = 9(n -1)n -1 = 441/9n -1 = 49n = 49 + 1 n = 50By using the formula ,Sum of nth terms , Sn = n/2 [a + l]⇒ S50 = 50/2 (a + l)⇒ S50 = 25 (108 + 549)⇒ S50 = 25 × 657⇒ S50 = 16425Hence, the sum of all integers between 100 and 550, which are divisible by 9 is 16425 |
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