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Select the correct answerHow many different positive integers exist between 106 and 107, the sum of whose digits is equal to 2?Options6578

Question

Select the correct answer

How many different positive integers exist between 106 and 107, the sum of whose digits is equal to 2?

Options:

  • 6
  • 5
  • 7
  • 8
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Solution

Break Down the Problem

  1. Identify the range of numbers to consider between 106106 and 107107.
  2. Determine the condition that the sum of the digits of these numbers must equal 22.
  3. Find all the positive integers that meet the criteria.

Relevant Concepts

  • The integers we're interested in are those between 106106 and 107107, which includes only 106106 itself as 107107 is the upper limit and is not included in the range.
  • The sum of the digits of 106106 is 1+0+6=71 + 0 + 6 = 7, which does not equal 22.

Analysis and Detail

  1. The range of integers between 106106 and 107107 is:
    • Only 106106.
  2. Check the digits of 106106:
    • Digits: 11, 00, and 66
    • Sum of the digits: 1+0+6=71 + 0 + 6 = 7

Verify and Summarize

  • Since 106106 is the only integer in the given range and the sum of its digits (7) does not meet the requirement of equaling 2, no integers satisfy the criteria.

Final Answer

There are 00 different positive integers between 106106 and 107107 whose digits sum to 22.

This problem has been solved

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