Aptitude Tricks to Solve Quantitative Aptitude Questions On Numbers by S October 2, 2015 by S October 2, 2015 Formulas of Number Series 1 + 2 + 3 + 4 + 5 + … + n = n(n + 1)/2 (12 + 22 + 32 + ….. + n2) … 0 FacebookTwitterPinterestEmail
