2 years ago

Rich chooses a 4-digit positive integer. He erases one of the digits of this integer. The

Mathematics

1 answer:

tiny-mole [99]2 years ago

4 0

Answer:

*step by step*

Step-by-step explanation:

If he erases one of the digits in a 4-digit number, then only 3 remain, not four.

If he erased the first digit, then it must have been 1-9, so the total is in the range 11 - 19

otherwise the digit could have been 0-9 in which case the total is in the range 10-19

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Read 2 more answers