Overview: LCM, GCD (HCF), remainders, divisors, prime factorization, odd and even numbers, positive and negative numbers, factorials, unit digits of numbers. Strategies such as plugging in answer choices, eliminating incorrect options, and using smart values typically go a long way on such questions. A building block that will help answering quite a few Quant questions. Moderate difficulty.
Lesson promise: I’ll give you all the tools to deal with questions dealing with integers in this lesson.