Mathematics: If there are 52 cards in a deck what is the probability of drawing two cards, and getting a king both times?

If there are 52 cards in a deck what is the probability

Ответ:

klocke2001

02.06.2020

Mathematics

There are two cases here:

Case 1: First card chosen is a queen

452∗351=1221452∗351=1221

Case 2: First card chosen is not a queen.

4852∗451=162214852∗451=16221

Adding both the cases, we get 1722117221 = 452452 = 113113

In a simpler case: Think about it this way: Shuffle a deck of cards randomly. The probability of drawing a queen as your second card is the same as the probability that the second card in the deck is a queen, which is clearly 4/52.

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Ответ:

kidpryo1

10.02.2023

Mathematics

Hello,

$\sum _{i=1} ^{30}(a_i)=\sum _{i=1} ^{30}(4*i+1)\\

=4*\sum _{i=1} ^{30}(i) +\sum _{i=1} ^{30}(1)\\

=4* \dfrac{31*30}{2} + 30 =1860+30=1890$

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If there are 52 cards in a deck what is the probability of drawing two cards, and getting a king both times?

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