X and y being "congruent" under modulo n is denoted by "x ≡ y mod n" and defined as "x and y having the same remainder when divided by n." Show the following congruences. Required:
Show that the smallest k for 1640 ≡ k mod 7 is k = 2.

Which is the correct sequence of steps to set up a document in landscape orientation? a. select page setup from the file menu. then click the margins tab and select landscape. b. select page setup from the edit menu. then click the margins tab and select landscape. c. select page setup from the insert menu. then click the margins tab and select landscape. d. select page setup from the format menu. then click the margins tab and select landscape