20 squared = 20 x 20 = 400
400 in expanded form using exponents = (4 x 10^2) + (0 x 10^1) + (0 x 10^0)
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Since its probaly not a good idea to stack them, unless you have bunk beds, it would depend on the size of the room, and the size of the kids. but probably no more than 1 kid for every 3.5 square feet, follow the math. Room, length times height divided by (Kids times girth times height) That's R(L x H) / K(G x L) multiply any total X 2 if kids have been eating beans, then you must factor in ventalation per gasy child. an extra V squared.
It is: 5 to 4 in its simplest form
Imagine 12 kids, and four of them have books. You can write that 4 over 12. You can divide both four and twelve by two: 2 over 6. You can divide both two and six by two: 1 over 3. So one third is the simplest way to say what proportion of the kids have books.
he dosnt have any kids or a wife
Since there are no kids in space, I suggest 100%.