The crisp new dollar bill that I have just taken from my wallet bears the serial number 24598176. It’s easy to tell that the number is exactly divisible by 2 but not by 5. Is it divisible by 3? by 4?

Ravi Handa,an alumnus of IIT Kharagpur suggests three simple rules to find out divisibility of numbers. The concept of 'divide and conquer', derived from the Latin phrase 'Divide et impera', was put ...

In the CAT exam, concept of Divisibility holds great importance for the aspirants to gain high percentile in the exam. Read on some examples to gain understanding of the topic in detail and prepare ...

Prime numbers, vital in mathematics and competitive exams, can be quickly identified using a systematic approach. This method involves checking divisibility by primes up to the square root of the ...