The three angles of a quadrilateral are 750 , 750
and 960
. Then the fourth angle is
(a) 54
(b) 84
(c) 114
(d) 124

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.