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Juego Virtual

Authored by Juan Carlos Rodríguez Ramírez

Mathematics

9th Grade

Used 1+ times

Juego Virtual
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10 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Dados los conjuntos unitarios:

A={x+7 ; 2x+5}∧ B={y -3 ; 5y-15}

Hallar el valor de "x + y"

1

2

3

4

5

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Hallar el número de subconjuntos del conjunto "C":

C = {3; 5; {8}{5}; 8; 3}

128

64

32

16

8

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Dados los conjuntos:

A = {-3; -2; -1; ½ ; 1; 2; 3}

B = {X ∈ A/ -2 ≤ X < 3}

C = {X∈ A/ 2x2 + 3x  –2 = 0}

El resultado de (A-C) B  es:

{-1; 1; 2; 3}

{-1; 1; 2}      

{-1; 1; 3} 

{-1; ½ ; 1; 2} 

ninguno.

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

De 40 alumnos de una sección:

15  aprobaron Física,

6 aprobaron Física y Química

y 13 aprobaron Química.

¿Cuántos alumnos desaprobaron los dos cursos mencionados?

18

15

12

10

6

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Si  ab = 9 (a + b). Hallar ab

8

18

9

27

81

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

¿Cuál es el mayor número de 4 cifras del sistema QUINARIO?

4321

4444

5555

5432

5444

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Resuelve: 2(x + 1)+3 = x + 5

0

R

5

1

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