By Mansi Yadav

Verified by Ajay Kumar

Given that the average of five consecutive odd numbers is 27, determine the product of the first and last numbers.

  1. 713

  2. 654

  3. 852

  4. 546

Answer: A

Solution

Solution: For five consecutive odd numbers, the middle number equals their average. The numbers are 23, 25, 27, 29, and 31. Product of the first and last numbers \(=23\times31=713\). Trick: For an odd number of consecutive numbers, the average is the middle number.

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