Problem 29: a system of equations with three variables and a parameter m . She started substituting, but her mind went blank. “Si el sistema tiene infinitas soluciones, halle m.” She remembered: the determinant of the coefficient matrix must be zero. She calculated quickly. m = 2 . She bubbled D.
She walked out into the afternoon sun. The jacarandás were in bloom—purple flowers scattered on the grass. She didn’t know if she had passed. But for the first time, she felt she had fought every single problem, left no easy point behind, and survived the mental marathon. Two weeks later, at 10 a.m., she logged into the PUCP portal. Her hands were cold. The page loaded: examen de admision pucp
But problem 27 was a trap. A geometry problem: a triangle inscribed in a semicircle, with an altitude drawn, asking for a length. She knew the Thales theorem, but the numbers were ugly. She spent six minutes. Her pulse raced. She skipped it. Problem 28: probability with two dice— “suma mayor que 9” —she could do that. 10, 11, 12: 6 favorable cases out of 36. Simplify to 1/6. Good. Problem 29: a system of equations with three
Pencils down. Silence. Then the shuffle of papers, the squeak of chairs, the collective exhale of 200 students. She calculated quickly
Aptitud Académica: 412 Matemáticas: 398 Ciencias Sociales y Lectura: 427 Resultado: INGRESANTE – Facultad de Ciencias Sociales