michealagiyer4923 michealagiyer4923
  • 08-06-2021
  • Mathematics
contestada

Jonah's favourite number is a positive integer. One day, he decided to write down all of the positive integers starting at 1 and ending with his favourite number. He noticed, in doing so, that he wrote the digit 7 exactly 30 times. What is Jonah's favourite number?

Respuesta :

rimahsabbagh rimahsabbagh
  • 10-06-2021

Answer:

um I think its 14

Step-by-step explanation:

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