By which number 219,488 must be divided to get a perfect cube?
Answers
Answer:
92
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Answer:
The possibilities are endless. The required numbers include 225, 219,488 1/15, , 25/3, 9/5, etc. So, let me show you how to find those out.
First, you need to break 1800 into its prime factors.
219,488 =2³×3²×5²
To make 219,488 a perfect cube, you must make sure that it is a product of perfect cubes. For that you'll need to multiply (which is inverse of division) and/or divide it with certain numbers. The ways to do that could be
Multiplying it by 3×5=15
219,488 ×15=2³×3³×5³=(2×3×5)³=30³
Multiplying by 15 can also be written as dividing by 1/15
Multiplying it by 3 and dividing by 25
219,488 ×3÷25=2³×3³=(2×3)³=6³
It can also be written as dividing by 25/3
Multiplying it by 5 and dividing by 9
219,488 ×5÷9=2³×5³=(2×5)³=10³
It can also be written as dividing by 9/5
Dividing it by 25×9=225
219,488 ÷225=2³
As I said, dividing by 225. XD
Now, you can multiply or divide the above results with any perfect cube, the answer will always be a perfect cube. For example:
Dividing 1800/225 by 2³
2³÷2³=1=1³
That is basically dividing 1800 by 1800
This one is my favourite
Dividing 1800/(25/3) by 2³
6³÷2³=3³
That is basically dividing 219,488 by 200/3
So as you can see, these random possibilities go on and on forever from now on.
And, if you're anything like me, you'll surely like to question dividing 1800 by ∞
219,488 ÷∞=0=0³
And vice versa too, of course
But, are these true?
Sadly, no, they aren't. As they are not defined :(
Hope you got your answer now.