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The average of all odd numbers from 113 to 159 is ______.1). 1352). 1343). 1334). 136 |
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Answer» First we need to FIND the total number of odd NUMBERS, Last number = 159 and First number = 113 According to AP, ⇒ 159 = 113 + 2(n - 1) ⇒ n - 1 = 23 ⇒ n = 24 ∴ Sum of 24 odd numbers from 113 to 159 = 24/2 × [2 × 113 + 2(24 - 1)] ⇒ 12 × [226 + 46] ⇒ 3264 ∴ AVERAGE = 3264/24 = 136 |
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