Please help me with these 3 questionss

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265

What line represents the relationship between r and s