i havea bit but I'm not sure could you help me finish it put it on a new paper for whole the staff

since the possibilites of total number closed set in A is Q xQ = ) Cardinality of A = Cardinalily Q x Q A = { [ a, b ] = R: a, b GQ, a Q since a. +92+ ta; bitbat .. * bi 25 # 2 2 62 a,-Q1bi -bz 2 A is one to one 1 4/s No ( injection ) by The Cantor - Bernstein Therern 27 14 1 = No Cardinality J A = Q X Q = No X No = No (courtiable )Consider the set A = { [a, b] C R : a, b E Q, a