The National Defence Academy (NDA) exam is a highly prestigious and competitive examination conducted by the Union Public Service Commission (UPSC) of India. It is the gateway for young individuals aspiring to join the Indian Armed Forces as officers in Read More …
Important Mathematics formula pdf for competitive exam 2025. Maths Formulas and Tricks for SSC, IBPS, UPSC and RRB exam 2025. Mathematics Formula PDF for Competitive Exam Properties of Set Operations: For any three sets A B, and C, the following Read More …
Maths by Shakir sir Quantitative aptitude one of the important section in which candidates need to focus on tricks if you want to solve them quickly. Here i have lot of tricks to solve quantitative aptitude problems with in seconds. Read More …
Factorial Notation: Let n be a positive integer. Then, factorial n, denoted by n! is defined as: n! = n(n-1)(n-2)……..3.2.1. Examples: (i) 5! = (5x 4 x 3 x 2 x 1) = 120; (ii) 4! = (4x3x2x1) = 24 etc. We Read More …