Question

Cards if 2 cards are selected from a standard deck of 52 cards without replacement, find these probabilities.
A. Both are spades
B. Both are the same unit
C. Both are kings
I know the answers (they are in the back of the book) but I need to know how to solve the problem. The answer for "a" is 1/17. For B its 4/17 and the answer for c is 1/121

Answer 1

A. \[P=\frac{ 13 }{ 52 }\times \frac{ 12 }{ 51 }=?\]

Answer 2

B.
\[P=4 \times \frac{ 13 }{ 52 }\times \frac{ 12 }{ 51 }=?\]

Answer 3

\[P=\frac{ 4 }{ 52 }\times \frac{ 3 }{ 51 }=?\]

Answer 4

Thank you very much!

Answer 5

yw