If A= 1,2,3,4 , then the number of subsets of A that contain the element 2 but not 3 is

JEE Main Mathematics question

If , then the number of subsets of that contain the element 2 but not 3 is

Answer: (B)

2 is included, 3 is excluded; each of 1 and 4 is free: .

Question ID VK-003185