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How Do You Know If A Number Is Divisible By 23? [Solved]
As per the rule, multiply the last digit by 7 and add the result to the remaining number; or multiply the last two digits by 3 and add the result to the remaining number; repeat this rule over and over again as necessary; if the result is divisible by 23, then the original number is divisible by 23.
Trick 399 - Divisibility Rule of 23
Shortcuts to do calculations mentally, useful for developing numerical aptitude and for success in competitive examinations….this …
Divisibility Test For 23
This video presentation gives an explanation on how to
Find the remainder when 3^287 is divided by 23| Theory of Congruence| Number Theory @Maths Analysis
Find
