
utm 2
Authored by Daniela Velasco
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University
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144 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En un sobre hay 20 papeletas, ocho llevan dibujado un coche las restantes son blancas. Hallar la probabilidad de extraer al menos una papeleta con el dibujo de un coche si se saca tres papeletas:
17/20
13/42
12/15
46/57
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calcular la probabilidad de sacar exactamente dos cruces al tirar una moneda cuatro veces.
1/2
5/12
6/16
5/6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dos hermanos tienen entre sí $180. Si uno de ellos tiene cinco veces lo que tiene el otro, ¿qué porcentaje del dinero total le corresponde al hermano que tiene más?
33,33%
16%
54%
83,33%
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Andrea desea probar que tan segura es la contraseña de su celular, para lo cual ha elegido tres letras y tres dígitos. Determine el número de contraseñas que se puede generar usando todos los elementos anteriores, sin que se repitan.
240
120
216
720
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Orlando tiene una deuda y decide pagar $120 cada mes. ¿Cuál era el importe de la deuda si tarda 20 meses en saldarla?
600
900
2400
1200
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Andy Xavier se va de compras y adquiere una camisa de USD 80 con 25% de descuento y una cartera de USD 75 con 20% de descuento, el almacén por su aniversario decide que si la compra supera los USD 100 hará un último descuento del 10%. ¿Cuánto deberá pagar Andy Xavier en total?
120
155
108
110
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cuatro veces un número es igual al número aumentado en 30, entonces el cuadrado del número es:
100
169
400
121
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