JEE Main Mathematics question
Let , . Then, the number of sets such that is
Answer: (C)
Solution
, . must contain 2 and 4, and each of 1, 3, 6 may or may not be in : .
Let , . Then, the number of sets such that is
, . must contain 2 and 4, and each of 1, 3, 6 may or may not be in : .