The average of 5 consecutive odd numbers is 25. Find the smallest of these numbers.
The tens digit is four times the ones digit in a certain number. If the sum of the digits is 10, what is the number?
If a=(3/7), b=(3/7)² and c=?(3/7), then which of the following is true?
Divide 55 into three parts such that when 5 is subtracted from the first part, 5 is added to the second part and 5 is multiplied by the third part, all end up in the same result.
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