SOLUTION: What is the minimum number of consecutive even numbers that you must multiply together to be sure that the ones digit of their product is a 0? a) 4 b) 5 c) 3 d) 2 e) 6

Question 288140: What is the minimum number of consecutive even numbers that you must multiply together to be sure that the ones digit of their product is a 0?
a) 4
b) 5
c) 3
d) 2
e) 6
Found 2 solutions by checkley77, user_dude2008:
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
THE ANSWER IS D) 2
0*2=0 OR
8*10=80
Answer by user_dude2008(1862) (Show Source): You can put this solution on YOUR website!
answer is b) 5

worst case: 2*4*6*8*10 = 3840
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