Number Properties Flashcards

(41 cards)

1
Q

Que se necesita para que un número sea primo

A

Divisible por exactamente 2 números

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2
Q

Que números se pueden dividir por exactamente 3 divisores

A

Los cuadrados de números primos

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3
Q

11 al cuadrado

A

121

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4
Q

12 al cuadrado

A

144

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5
Q

13 al cuadrado

A

169

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6
Q

14 al cuadrado

A

196

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7
Q

15 al cuadrado

A

225

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8
Q

Que tipo de número es 0

A

Even
Integer

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9
Q

Even + odd

A

Odd

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10
Q

Even + even

A

Even

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11
Q

Odd + odd

A

Even

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12
Q

Odd times even

A

Even

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13
Q

Odd times odd

A

Odd

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14
Q

Even times even

A

Even

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15
Q
A

Black

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16
Q

3 a la 1
3 a la 2
3 a la 3
3 a la 4

A

3
9
27
81

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17
Q

4 a la 1
4 a la 2
4 a la 3
4 a la 4

18
Q

5 a la 1
5 a la 2
5 a la 3
5 a la 4

19
Q

Mississippi rule

A

Número total de espacios/(A!)(b!)…

Donde a y b son el único tipo de letras y la cantidad de veces que se repiten

20
Q

Propiedades GCF y LCM

A

XY = GCF(x,y) * LCM(x,y)

21
Q

What is the reciprocal of 11

22
Q

Formula for reciprocal

A

Reciprocal (1/n) = n

23
Q

Name digit types from
1234.567

24
Q

How to know if a number i divisible by 4

A

if the last two digits divisible by 4

25
Cómo saber el dígito final de un número con un exponente grande
Luego de encontrar el patrón, divide el exponente entre el número de periodos y el reminder permitirá contar el restante del ciclo
26
Cómo saber si una fracción es un terminating decimal
Si al simplificarla al Máximo. El denominador está compuesto únicamente por factores 2 y/o 5
27
Perfect square other than 0 and 1 have what in Comon
All of its prime factors have even exponents Ej: 144 = 2^4 x 3^2
28
Raíz de 2
1.4
29
Raíz de 3
1.7
30
Raíz de 5
2.2
31
Cómo sacar el LCM de (x,y)
XY/GCM(X,Y)
32
Cómo sacar LCM de más de 2 números
Saco el prime factorization de todos los factores. Me quedo con los factores y el exponente más grande que tengan entre los números
33
How do you express an odd number and an even number
Even = 2K Odd = 2K+1
34
Los primos son únicamente números positivos?
Si
35
Cómo sacar la suma de los factores de un integer
1. Hacer prime factorization 2. Luego utilizar fórmula
36
Cómo encontrar los trailing zeroes de un número muy grande ejemplo 60!
37
Cómo sacas el promedio de un evenly spaced set
Median=Mean=(a1+an)/2
38
Raíz de 5
2.2
39
What does x% mean
X/100
40
Is (x)(x+1)(x+2) a multiple of 3?
Yes
41
Is (x)+(x+1)+(x+2) divisible by 3?
Yes