Complement
Complement is a group of proteins found in blood serum which act in concert with antibodies to achieve the destruction of non-self particles such as foreign blood cells or bacteria.
Complement is also a mathematical operation.
The complement of a number is a tool used to subtract numbers when only addition is allowed. I will explain complements for our familiar decimal number system.
To find the complement of a number, you need to know how many digits you want your complement to have. Then, make the substitutions in the table below and then add 1 to the result.
| The digit | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| changes to | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Example: Find the complement of 7520. We want 5 digits.
- Using the table, 07520 becomes 92479.
- Add 1 to get 92480.
- Answer: 92480
To subtract two numbers using complements, you take the first number and add it to the complement of the second number, then erase the "1" at the beginning of the sum.
Example: From 375 subtract 82.
- Since the longest number we have is three digits, we will use a three-digit complement.
- The complement of 082 is: (917 plus 1) which is 918.
- 375 plus 918 is 1293. Erase the "1" at the beginning to get the final answer.
- The answer is 293.
With this
gradually built a fleet of trading vessels, which traversed every known
wealth and commercial honor.
The tie between the brothers was always an affectionate one; and when
of John. The estate.html">estate.html">estate was much embarrassed, the child was a delicate girl of
changed; Mary Campbell had grown to a sweet and charming womanhood, and
an estate as could be found in the west of Scotland.
During these ten years, one desire had dominated all others in John
It seemed to him the most natural of events, and also the most desirable.
brother's dying wish. He might buy his son a much larger and finer estate,
honorable lineage of Drumloch. The old keep could be enlarged and
domain; and yet Allan could lawfully call himself, "Campbell of Drumloch."
Thus to establish on a broader and richer basis the old home of his
until it became almost a sacred.html">sacred duty in his eyes. For the Scotsman's
In fact, his granite nature is finely marbled throughout with veins of
hearth is as sacred as an altar in his memory. A bluebell or a bit of
his heart thrill with an impossible loyalty. Those who saw.html">saw John Campbell
things but money and bills of lading. Those who saw him softly stepping
the hard grim faces of his ancestors, would have called him an aristocrat
Allan, as the future Campbell of Drumloch, was an important person in his
the leisure and means of a fine gentleman. And as Allan was intelligent
reason why the old root should not produce a new and far more splendid
to her uncle a proper time to consummate the hopes for which he had.
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