2 years ago

F(1)=15 f(n)=f(n-1)·n f(2)=?

Mathematics

1 answer:

nika2105 [10]2 years ago

6 0

Answer:

is f(2)=13 this is the answer because You have to división ir multiplicar ir

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What is the probability of choosing a pair that contains ONLY cards labeled with the letters B, C, or F?

Nezavi [6.7K]

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$Pr = \frac{1}{6}$

Step-by-step explanation:

Given

$Cards = \{A,B,C,D,E,F\}$

$r = 2$ --- selection

Required

Probability of choosing a pair with only B, C and F

The total selection is: 36

This is calculated as thus:

$First = 6$ --- First selection can be any of the 6 cards

$Second = 6$ --- Second selection can be any of the 6 cards [No restriction]

So, we have:

$n = First * Second$

$n = 6 * 6$

$n = 36$

The pair of only B, C or F is:

$Pair = \{(B,C), (B,F), (C,B),(C,F),(F,B),(F,C)\}$

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So, the probability is:

$Pr = \frac{n(Pair)}{n}$

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