How many pair combinations of numbers are there possible using 1000 numbers were duplicate numbers example 11 would be a new combination and diferant number order of numbers would also be considered as a different pair. example a b and b a would be considered as a different pair. so, do the math and tell me how pairs i can have this 1000 different numbers or letters or objects or graphics or whatever can i have with the 1000?

499,500

Step-by-step explanation:

The question is a bit unclear since the grammar isn't great (no offence). But from what I understand is that your just choosing a pair of numbers from 1000 and seeing how many combinations there are.

Type 1000C2 into the calculator and it comes out as 499500.

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584