How full of water is the glass? 2/3 1/3 2/1 1/2

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Reflect the point (7,0) across the y-axis

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