For =A1+B1, the operator is the plus sign (+).
A1 is a British electroplating hallmark and means superior quality. As this hallmark is for silver pieces and there is no mark allowed for gold plaiting it is most likely that you have a high quality silver plated piece that was further plated with gold. This is allowed under British law.
A1 is an English term for silver plate. Items with A1 are not sterling silver.
The marking A1 plus typically refers to a level of proficiency in a language according to the Common European Framework of Reference for Languages (CEFR). A1 denotes a beginner level, while the "plus" indicates that the learner has achieved skills slightly above the basic A1 level, demonstrating a greater ability to communicate in simple situations. This could include a broader vocabulary and a better understanding of basic grammar.
"A1 plus silver" typically refers to a grading system used in various industries, such as finance or collectibles, to indicate the quality and condition of an asset. "A1" signifies the highest level of quality, while "plus silver" suggests an additional premium or superior status. Together, it implies that the item or asset is not only of top quality but also has added value or significance.
A1 is an English term for silver plate. Items with A1 are not sterling silver.
Barker Brothers, Birmingham, England
A positive and A1 positive (usually written as A plus sign and A1 plus sign) refers to the antigens in the blood. People with the A blood type contain A antigens. People with A positive blood refers to the presence of both A antigens and Rh-positive antigens.
The Hallmark, Gilbert Marks....london 1861- 1905
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The mean of the numbers a1, a2, ..., an is equal to (a1 + a2 + ..., + an)/n. This number is used mostly as the average. It is called the arithmetic mean.