Question

what is the divisibility test of 7 basic
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Answer 1

Answer:

To check if a number is evenly divisible by 7: Take the last digit of the number, double it Then subtract the result from the rest of the number If the resulting number is evenly divisible by 7, so is the original number.

Answer 2

Adding 5 times the last digit to the rest gives a multiple of 7. (Works because 49 is divisible by 7.).....