The intersection of two sets A and B is defined as the set composed by the elements appearing in both A and B.
So, the intersection is

Because all the other numbers do not belong to both sets:
- 2, 3 and 7 belong to A alone
 - 13, 15 and 17 belong to B alone
 - 5 and 11 belong to both A and B
 
 
        
             
        
        
        
One way to find the least common multiple of two numbers is to first list the prime factors of each number.
8 = 2 x 2 x 2
Then multiply each factor the greatest number of times it occurs in either number. If the same factor occurs more than once in both numbers, you multiply the factor the greatest number of times it occurs.
2: three occurrences
3: one occurrence 
So, our LCM should be 
2 x 2 x 2 x 3 = 24.
So, Marco can buy, at the very least, 24 beads of each color to have equal colors of beads.
 
        
             
        
        
        
Answer:
Hope.you have a good merry Christmas Happy early new year
 
        
             
        
        
        
Answer:
.24
Step-by-step explanation: