SOLUTION: One of five consecutive whole numbers is 43. What is the unit digit in the product of these five numbers?
Algebra.Com
Question 390407: One of five consecutive whole numbers is 43. What is the unit digit in the product of these five numbers?
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
Zero. Exactly one of the five numbers is 0 modulo 5 (i.e it is divisible by 5) and at least two numbers are divisible by 2. Therefore the product is divisible by 10.
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