1道国外的数学题;It is possible to determine if a number is divisibl
1道国外的数学题;
It is possible to determine if a number is divisible by 2,3,4
without actually carring out the division but applying some known divisibility test. Find divisibility tests for 3,4,5,6,11
state what the tests are and provide examples to illustrate how there tests can be applied.
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