phillipmccormick
01.07.2020 •
Mathematics
Is the number even or odd?
2018−2017+2016−2015 + . . . +2–1
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Ответ:
It is the odd number 1009
Step-by-step explanation:
Notice that this problem involves the addition of a number "1" per consecutive pair (a number minus the integer that immediately precedes it), so it adds "1" (one) every couple of consecutive numbers.
2018 - 2017 = 1
2016 - 2015 = 1
...
4- 3 = 1
2 - 1 = 1
That means it is the addition of 2018/2 = 1009 numbers "1". This clearly results on the number 1009, which is an odd number.
Ответ:
the answer would be 56 times 2
Step-by-step explanation: