MollsB
MollsB
19-09-2017
Mathematics
contestada
How many pairs of Whole numbers have a sum of 40
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Catya
Catya
19-09-2017
whole numbers are like counting numbers { 0, 1, 2,3, 4, ...} ; only positive.
since they add to make 40 there will be 40 pairs because every time you subtract one to add to the other.
40 + 0 = 40
39 + 1 = 40
38 + 2 = 40
...
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smart121
smart121
19-09-2017
Prime #s up to 40:
2,3,5,7,11,13,17,23,29,31,37.
There are 3 pairs of prime numbers having sum of 40. The pair are {3,37},{11,29},{17,23}.
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