How many lines of reflection does a square have?

What is the shape of the height and weight distribution

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

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