not many people have ever seen a trick for testing divisibility by 7. Here’s the trick. Remove the last digit from the number, double it, and subtract it from the first part of the number. Do this repeatedly until you get something you recognize as being divisible by 7 or not.
Any word you have to hunt for in a thesaurus is the wrong word. There are no exceptions to this rule. You think you might have misspelled a word? O.K., so here is your choice: either look it up in the dictionary, thereby making sure you have it right - and breaking your train of thought and the writer's trance in the bargain - or just spell it phonetically and correct it later.
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