I think its 11 for its absolute value
Answer: The chance both cards will be a spade is
.
Step-by-step explanation:
We know that , in a standard deck , the total number of cards = 52
The number of spades = 13
If a person selected 2 cards,
The total number of combination of selecting 2 cards out of 52 = ![^{52}C_2](https://tex.z-dn.net/?f=%5E%7B52%7DC_2)
The number of combination of selecting 2 spade cards out of 13 = ![^{13}C_2](https://tex.z-dn.net/?f=%5E%7B13%7DC_2)
Then , the probability that both cards will be a spade=![\dfrac{^{13}C_2}{^{52}C_2}](https://tex.z-dn.net/?f=%5Cdfrac%7B%5E%7B13%7DC_2%7D%7B%5E%7B52%7DC_2%7D)
![\dfrac{\dfrac{13!}{2!11!}}{\dfrac{52!}{2!\times50!}}\ \ [\because\ ^nC_r=\dfrac{n!}{r!(n-r)!}]](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Cdfrac%7B13%21%7D%7B2%2111%21%7D%7D%7B%5Cdfrac%7B52%21%7D%7B2%21%5Ctimes50%21%7D%7D%5C%20%5C%20%5B%5Cbecause%5C%20%5EnC_r%3D%5Cdfrac%7Bn%21%7D%7Br%21%28n-r%29%21%7D%5D)
![=\dfrac{13\times12}{51\times52}](https://tex.z-dn.net/?f=%3D%5Cdfrac%7B13%5Ctimes12%7D%7B51%5Ctimes52%7D)
![=\dfrac{1}{17}](https://tex.z-dn.net/?f=%3D%5Cdfrac%7B1%7D%7B17%7D)
Hence, the chance both cards will be a spade is
.
Answer:
toficiiciicicixixicicivivivivii
Answer:
35/3 is your answer
Step-by-step explanation:
also if you want it in decimal form its 11.6
Answer:
boys:girls:teachers
5 : 4 :1
Step-by-step explanation:
75 boys, 60 girls and 15 teachers
boys:girls:teachers
75 : 60 :15
Divide each term by 15
75 /15 : 60/15 :15/15
5 : 4 :1