How many zeros are there in the product 200*199*198*197..................*4*3*2*1

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16 May 2012 zero

How many zeros are there in the product
200*199*198*197..................*4*3*2*1

OPtion

1) 43
2) 44
3) 45
4) 46
5) 47
6) 48
7) 49
8) 50
9) 54
10) none of these

Solution

200/5 = 40 zeros because every 5 will make a zero in the product
40/5 = 8
8/5 = 1.6
so total zeros = 40+8+1 = 49

Correct Option: 7 Best Solution (6)