How many zeros at the end of 1000!

NO NO NO

noo

1000! is a super large number

?

wut?

yah im confused

1000 * 999 * 998 * 997 ......... 1

a ok lol

zeros, as in the number of zeros in all the numbers up till 1000????

1(0,0,0)

249 zeros. Is this right?

I see there's a method. The answer that comes for me is 248

It is 249.

200+40+8=248

1000/5 + 1000/25 + 1000/125

200 + 40 + 8 248

any more answers?

haha well like a lot, there's ten in every one hudred until you reach on hundred then there are 12 so 12 and 100 = 1200 I think?

Elementary. This is given by Legendre's formula.

wait 10, 20, 30, 40, 50, 60, 70, 80, 90 100 = 11 1000 x 11 = 11000 D: maybe?

@FoolForMath your answer?

thats not possible

248.

yeah that is what i got

248

To find the multiplicity of 5 in 1000!, use Legendre's Formula http://en.wikipedia.org/wiki/Factorial \[\left\lfloor \frac{1000}{5}\right\rfloor +\left\lfloor \frac{1000}{5^2}\right\rfloor +\left\lfloor \frac{1000}{5^2}\right\rfloor +\left\lfloor \frac{1000}{5^3}\right\rfloor +\left\lfloor \frac{1000}{5^4}\right\rfloor =200+40+8+1= 249 \] Of course the multiplicity of 2 is more than 249. 2 and 5 together generate zeros. There are 249 zeros.

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