text: # Phone numbers
  
  How many 9-digit telephone numbers can be compiled from the digits 0,1,2,..,8,9 that no digit is repeated?
  
  N =  3628800
  
  ### Step-by-step explanation:
  
  Did you find an error or inaccuracy? Feel free to write us. Thank you!
  
  Showing 1 comment:
  Mathyu
  Solution is not correct. 0-9 is 10 digits, so n = 10 * 9 * 8 * 7 * 6 * 5 * 4 = 604800. Or, 10!/3! = 604800. If there was a restriction on the first digit, such that the first digit could not be 0 or 1, or any other number, then it would be 9. However, there is no restriction (that is given) to make this valid, so for the first digit, there are initially 10 digits to choose from. After one is taken, then it goes to 9 and etc.
  
  5 years ago  4 Likes
  
  Tips for related online calculators
explanation: The text extract contains a math question and its answer. The question asks how many 9-digit telephone numbers can be compiled from the digits 0 through 9 without repeating any digit. The provided answer is 3,628,800, and there is a comment suggesting that the solution might be incorrect.
distilabel_metadata.content: Evaluate the user given text extract and determine if it contains a math question and optionally and answer to this question.
  
  Output rules:
  
  1. Briefly describe the document and mention if it contains a question or a question and answer.
  2. Finalize the output with: Label: no-question,question,question-and-answer,multiple-question,multiple-question-and-answer
distilabel_metadata.role: system
distilabel_metadata.content: # Phone numbers
  
  How many 9-digit telephone numbers can be compiled from the digits 0,1,2,..,8,9 that no digit is repeated?
  
  N =  3628800
  
  ### Step-by-step explanation:
  
  Did you find an error or inaccuracy? Feel free to write us. Thank you!
  
  Showing 1 comment:
  Mathyu
  Solution is not correct. 0-9 is 10 digits, so n = 10 * 9 * 8 * 7 * 6 * 5 * 4 = 604800. Or, 10!/3! = 604800. If there was a restriction on the first digit, such that the first digit could not be 0 or 1, or any other number, then it would be 9. However, there is no restriction (that is given) to make this valid, so for the first digit, there are initially 10 digits to choose from. After one is taken, then it goes to 9 and etc.
  
  5 years ago  4 Likes
  
  Tips for related online calculators
distilabel_metadata.role: user
distilabel_metadata.raw_output_q_a_detector_0: The text extract contains a math question and its answer. The question asks how many 9-digit telephone numbers can be compiled from the digits 0 through 9 without repeating any digit. The provided answer is 3,628,800, and there is a comment suggesting that the solution might be incorrect.
  
  Label: question-and-answer