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Which of the following is a correct statement about divisibility by 7?

Practice Questions

Q1
Which of the following is a correct statement about divisibility by 7?
  1. A number must end in 7
  2. Double the last digit and subtract it from the rest
  3. The sum of the digits must be divisible by 7
  4. A number must be a multiple of 14

Questions & Step-by-Step Solutions

Which of the following is a correct statement about divisibility by 7?
  • Step 1: Take the number you want to check for divisibility by 7.
  • Step 2: Look at the last digit of that number.
  • Step 3: Double the last digit.
  • Step 4: Subtract the doubled last digit from the rest of the number (the part of the number without the last digit).
  • Step 5: Check if the result is divisible by 7. If it is, then the original number is also divisible by 7.
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