Modifications 7479
The Numerometer has invented as the number machine that changes numbers until it makes them single-digit numbers. He still makes the change according to the same rule. For example: from the number 87312, after six modifications, he gradually made the number 3 as follows: 87312 → 15312 → 6312 → 912 → 102 → 12 → 3
a) Write the following two numbers, which will make from the number 24681.
b) To which one-digit number will the number 987654321 change after modifications?
c) How many adjustments does the machine need to change a 100-digit number written in nines to a 50-digit number written in nines only?
a) Write the following two numbers, which will make from the number 24681.
b) To which one-digit number will the number 987654321 change after modifications?
c) How many adjustments does the machine need to change a 100-digit number written in nines to a 50-digit number written in nines only?
Correct answer:
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combinatoricsarithmeticbasic operations and conceptsnumbersGrade of the word problem
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