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  1. arithmetic - How much zeros has the number $1000!$ at the end ...

    May 13, 2014 · 1 If a number ends with n n zeros than it is divisible by 10n 10 n, that is 2n5n 2 n 5 n. A factorial clearly has more 2 2 s than 5 5 s in its factorization so you only need to count how many 5 5 …

  2. What does it mean when something says (in thousands)

    Oct 31, 2017 · It means "26 million thousands". Essentially just take all those values and multiply them by 1000 1000. So roughly $26 $ 26 billion in sales.

  3. How many positive integers less than $1000$ divisible by $3$ with sum ...

    Aug 22, 2017 · How many positive integers less than $1000$ divisible by $3$ with sum of digits divisible by $7$? Ask Question Asked 8 years, 4 months ago Modified 8 years, 4 months ago

  4. combinatorics - Number of ways to invest $\$20,000$ in units of …

    Feb 24, 2023 · Question Statement An investor has $\$20,000$ to be invested amongst $4$ possible investments. Each investment must be a unit of $\$1,000$. If all the money needs to be invested …

  5. Creating arithmetic expression equal to 1000 using exactly eight 8's ...

    I would like to find all the expressions that can be created using nothing but arithmetic operators, exactly eight $8$'s, and parentheses. Here are the seven solutions I've found (on the Internet)...

  6. probability - 1/1000 chance of a reaction. If you do the action 1000 ...

    A hypothetical example: You have a 1/1000 chance of being hit by a bus when crossing the street. However, if you perform the action of crossing the street 1000 times, then your chance of being ...

  7. There are $1000$ people in a hall. One person had their hand painted ...

    Sep 3, 2020 · There are $1000$ people in a hall. One person had their hand painted. Every minute everyone shake their hand with someone else. How much time is needed to paint all the hands? …

  8. statistics - If I ask $1000$ people to choose a random number between ...

    Mar 19, 2016 · Imagine I asked $1000$ people to choose a number between $0$ and $999$ (both inclusive, the numbers are not biased, they will be completely random) and write that number down. …

  9. Prove $1.01^{1000} > 1000$ without using calculator

    Feb 4, 2020 · Prove $1.01^ {1000} > 1000$ without using calculator. With WolframAlpha $1.01^ {1000} \approx 20959$, but can this be proved without calculator?

  10. combinatorics - How do I accurately count the integers (1-1000) that ...

    Thus, in your problem N3 = ⌊1000 3 ⌋ = 333 N 3 = ⌊ 1000 3 ⌋ = 333, N4 =⌊1000 4 ⌋ = 250 N 4 = ⌊ 1000 4 ⌋ = 250, and so on. There's no problem with numbers near 1000 1000. The calculation that you're …