Quick Aptitude tricks, tips and shortcuts

Model 1: Model 2 Model 3 Model 4 Model 5 Model 6 MODEL 7 Model 8 Model 9 Model 10 Model 11 Model 12 Model 13 Model 14 Model 15 Model 3

Model 1 Model 2 Model 3: Model 4 Model 5 Model 6: Model 6 Model 7 Model 8 Model 9 Model 10 Model 11 Model 12 Model 13 Model 14 Model 15