Question

Let A={a, b, c, d}. B and C are two sets such that B and C subset of A and B intersection c = 0. Number of possible ordered pair (B, C) satisfying above condition is

Answer 1

if B intersection C=0 than it means that their is no common element in B and C so
B --------- C
a b c-------- d
a b. --------c d
a d.--------- b c
a C. ----------b d
a C d ---------b
b c d. ---------a
----------------------------
because it is written ordered pair total pairs=7*2=14