This application evaluates the mathematical skills that a seventh, ninth and eleventh grade student must develop; in addition to containing questions for the police promotion contest.

It contains millions of tests, which are the result of taking a group of questions and randomly changing their characteristics and in this way, every time you open the application you will find a different test.

The questions correspond to questions taken from the knowledge tests 7, 9 and 11 carried out in 2014, 2015 and 2016; In addition to previous police competitions.

The tests are self-corrected and self-graded, a report is presented of the grade that corresponds to the student depending on the scale of the grade with which the student is graded and, of course, the score that corresponds to him on the scale (0-100).

No other application presents the opportunity to the student to run the SAME TEST AS MANY TIMES AS NECESSARY until he or she masters the necessary procedures to solve the problem presented to him/her. Furthermore, due to the random nature of the data, MEMORIZATION OF THE RESPONSES IS USELESS in this application.

Among the different features are:

- Questions that use a wide variety of data in different representations (tables, bar charts, frequency polygons, pie charts)

- Questions on the calculation of areas of plane figures where shaded portions occur.

- Questions where different characteristics of solids are evaluated (platonic, prisms, antiprisms, among others)

- Questions where flat developments of different solids are evaluated.

- Questions that request the calculation of probabilities of different events

- Questions that require the calculation of averages, percentages, rule of three, ratios, proportions and others, that involve generic knowledge in the development of numerical aptitude.

- Questions about everyday situations that require representation in different graphs (bar diagrams, frequency polygons, among others)

- Questions where geometric transformations in the Cartesian plane are evaluated

- Questions where knowledge of first degree equations with one or two unknowns is required

- Questions where generalization is sought (deduction of both numerical and geometric patterns)

- Questions about plane representations of conic sections (ellipse, circle, parabola)

- Questions about trigonometric ratios.

- Both closed (multiple choice) and open (no multiple choice) questions

In general, this application seeks to be a source of a wide variety of type tests: Saber 7, 9 and 11, for students who are about to take them; Also to develop quantitative reasoning for police officers and review police knowledge.