Got it, Mohammad Haris — you’ve listed a few questions related to your Technical Branch (Peshawar) test preparation. Let’s tackle each one step by step: --- ✅ 1) 1397 × 1397 Use the identity . Let’s take 1397 = 1400 − 3 So, 1397^2 = (1400 - 3)^2 = 1400^2 - 2 × 1400 × 3 + 3^2 = 1,960,000 - 8,400 + 9 ] = 1,951,609 ✅ Answer: 1,951,609 --- ✅ 2) Which uncle of Prophet Muhammad (ﷺ) is mentioned in the Quran? Answer: Abu Lahab He is mentioned in Surah Al-Masad (Surah Lahab). --- ✅ 3) Diagonal Matrix A diagonal matrix is a square matrix in which all elements outside the main diagonal are zero. Example: \begin{bmatrix} 3 & 0 & 0\\ 0 & 5 & 0\\ 0 & 0 & 7 \end{bmatrix} --- ✅ 4) Lucknow Pact 1916 Fact: The Lucknow Pact was an agreement reached between the Indian National Congress and the All-India Muslim League in 1916 at Lucknow. It marked Hindu-Muslim unity against British rule. --- ✅ 5) Synonym of ‘Pledge’ Answer: Some synonyms are: Promise Vow Oath Guarantee --- ✅ 6) Antonym of ‘Pure’ Answer: Some antonyms are: Impure Contaminated Polluted Adulterated