text: # 28
  
  = 2 × 2 × 7
  
  = 2 × 14
  = 4 × 7
  
  = 1 + 2 + 3 + 4 + 5 + 6 + 7
  A triangular number.
  
  There are 28 days in February, except in leap years.
  
  28 is a perfect number because it equals the sum of all its factors (apart from 28 itself).
  
  There are 28 digits in one cubit. The ancient Egyptians had their own system for measuring length based on body lengths. A digit was based on the width of one finger (about 19 mm). A cubit was the distance measured from the elbow to the tips of the fingers, and this equalled 28 digits.
  
  Use a ruler to measure a digit and a cubit on yourself. How many of your digits make one cubit? How close is it to 28? Take measurements from a number of different people. How close are they to 28?
explanation: The document provides various facts about the number 28, including its prime factorization, representation as a sum of consecutive numbers, and its significance in different contexts such as months and ancient measurements. It also includes a practical activity to measure a digit and a cubit and compare the results to the historical value of 28 digits in a cubit. The document contains a question at the end, asking the reader to perform measurements and compare their results.
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: # 28
  
  = 2 × 2 × 7
  
  = 2 × 14
  = 4 × 7
  
  = 1 + 2 + 3 + 4 + 5 + 6 + 7
  A triangular number.
  
  There are 28 days in February, except in leap years.
  
  28 is a perfect number because it equals the sum of all its factors (apart from 28 itself).
  
  There are 28 digits in one cubit. The ancient Egyptians had their own system for measuring length based on body lengths. A digit was based on the width of one finger (about 19 mm). A cubit was the distance measured from the elbow to the tips of the fingers, and this equalled 28 digits.
  
  Use a ruler to measure a digit and a cubit on yourself. How many of your digits make one cubit? How close is it to 28? Take measurements from a number of different people. How close are they to 28?
distilabel_metadata.role: user
distilabel_metadata.raw_output_q_a_detector_0: The document provides various facts about the number 28, including its prime factorization, representation as a sum of consecutive numbers, and its significance in different contexts such as months and ancient measurements. It also includes a practical activity to measure a digit and a cubit and compare the results to the historical value of 28 digits in a cubit. The document contains a question at the end, asking the reader to perform measurements and compare their results.
  
  Label: question