The average of five consecutive odd numbers is 61. what is the difference between the highest and lowest numbers ?
Let the numbers be `x , x + 2, x + 4, x + 6 and x + 8`
Then , `(x + (x + 2) + (x + 4) + (x + 6) + (x + 8))/(5)` = 61 or `5x` + 20 = 305 or `x` = 57
So required difference = (57 + 8) - 57 = 8.
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