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安裝中文字典英文字典辭典工具!
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- How many numbers between 1 and 1000 are divisible by 2, 3, 5 or 7?
Further, $991$ and $997$ are below $1000$ so shouldn't have been removed either This gives $224+2+2=228$ numbers relatively prime to $210$, so $1000-228=772$ numbers are divisible by $2$, $3$, $5$, or $7$
- arithmetic - How much zeros has the number $1000!$ at the end . . .
1 the number of factor 2's between 1-1000 is more than 5's so u must count the number of 5's that exist between 1-1000 can u continue?
- Why is kg m³ to g cm³1 to 1000? - Mathematics Stack Exchange
I understand that changing the divisor multiplies the result by that, but why doesn't changing the numerator cancel that out? I found out somewhere else since posting, is there a way to delete this?
- Differential equations : A tank contains 1000 L of brine
A tank contains 1000 L of brine (that is, salt water) with 15 kg of dissolved salt Pure water enters the top of the tank at a constant rate of 10 L min The solution is thoroughly mixed and
- elementary probability - What is the chance that a 1 in 1000 event will . . .
A big part of this problem is that the "1 in 1000" event can happen multiple times within our attempt Compare this to if you have a special deck of playing cards with 1000 cards in it, exactly one of those cards is the ace of spades
- algebra precalculus - Multiple-choice: sum of primes below $1000 . . .
Given that there are $168$ primes below $1000$ Then the sum of all primes below 1000 is (a) $11555$ (b) $76127$ (c) $57298$ (d) $81722$ My attempt to solve it: We know that below $1000$ there are $167$ odd primes and 1 even prime (2), so the sum has to be odd, leaving only the first two numbers
- $1000$ small cubes are assembled into a larger cube. If one layer of . . .
$1000$ is the number of small cubes in the original cube Each face of the original cube contains $10\times10=100$ small cubes, so the effect of removing the small cubes on all six faces, before allowing for double or triple counting, is a deduction of $600$
- 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
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