Let R1 = {(1, 2), (2, 3), (3, 4)} and R2 = {(1, 1), (1, 2),(2, 1), (2, 2), (2, 3), (3, 1), (3, 2), (3, 3), (3, 4)} be relations from {1, 2, 3} to {1, 2, 3, 4}. Find

b) R1 ∩ R2.

c) R1 − R2.

So with b). Does this mean the ordered pairs in R1 and R2?

And with c) does this mean the sets in R1 that are not in R2?

What does the part of the problem, " be relations

from {1, 2, 3} to {1, 2, 3, 4}" mean?