document.write( "Question 390407: One of five consecutive whole numbers is 43. What is the unit digit in the product of these five numbers? \n" ); document.write( "
Algebra.Com's Answer #276795 by richard1234(7193)![]() ![]() 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. \n" ); document.write( " |