Use Euclid’s division lemma to show that the square of any positive integer is either of form 3m or 3m + 1 forsome integer m.

The National Defence Academy (NDA) exam, conducted by UPSC, is one of the most prestigious gateways to join the Indian Armed Forces. Every year, thousands of students aspire to clear this exam. A common question among aspirants is: “How many attempts can I give for...

If you are searching for NDA 2027 age limit, eligibility, syllabus, exam pattern, and preparation strategy, you are in the right place. The National Defence Academy Examination (NDA) is one of the most prestigious exams for students who want to join the Indian Army,...

The National Defence Academy (NDA) exam is one of the toughest competitive exams in India. Conducted by UPSC, it tests aspirants on Mathematics and General Ability (GAT). The written exam carries a total of 900 marks, and only those who clear the cut‑off are called...