The number 3

Ski organizers should print the start numbers from 1 to 45. How many times will they use the number 3 when printing?

Correct answer:

x =  15

Step-by-step explanation:

x=5+10=15 3  1 13  1 23  1 30  1 31  1 32  1 33  2 34  1 35  1 36  1 37  1 38  1 39  1 43  1



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