Answer:
LCM of 3 and 4 is 12 
Step-by-step explanation:
This is your answer 
 
        
                    
             
        
        
        
The probability of getting a 2 or a getting a black card, find individual probabilities; 
A standard deck has 52 cards. 
There are 4 2's in a normal deck; probability of getting it is 4/25 
The probability of getting a black card is; 26/52 since half the deck is red and black. 
Now add up the probabilities since it says "or" 
(4/52)+(26/52)=30/52 probability of the card that you were dealt being a two or a black card. 
Hope I helped :) 
        
             
        
        
        
Answer:
B (√6)/4
Step-by-step explanation:
The smallest multiplier that will make the denominator of the fraction into a perfect square is 2, so you have ...

_____
Answer choice D is also a correct rationalization of the denominator, but is not simplified as far as it can be. √24 = 2√6, so a factor of 2 can be cancelled from numerator and denominator, giving answer choice B.