Total utensils = 10+11+12= 33
There are c(33,2)= 528 ways we can pull out 2 utensils from the pile.
Of those 528 ways, there are c(10,2)= 45 ways to pick out knives from the pile.
There are c(11,2)= 55 ways to pick out spoons from the pile.
There are c(12,2)=66 ways to pick out forks from the pile.
Therefore, we have a 166/528 chance to randomly pick out two of the same item.
The probability that I will be hit by lightning is higher than the probability of the both items being the same kind. -_-
Total utensils = 10+11+12= 33
There are c(33,2)= 528 ways we can pull out 2 utensils from the pile.
Of those 528 ways, there are c(10,2)= 45 ways to pick out knives from the pile.
There are c(11,2)= 55 ways to pick out spoons from the pile.
There are c(12,2)=66 ways to pick out forks from the pile.
Therefore, we have a 166/528 chance to randomly pick out two of the same item.
Ince, don't bs me man :/
If you really used the exact same method including the same exact sentence structure as me, then the following questions will be no problem for you:
Show in more explicit terms, how you get from c(33,2) to 528. You don't use "c" by chance, only those who understood the mathematical concept would've known to use it.
Also, what does the "c" represent?