1) X 2) Y 3) N 4) None of these Solution: (2) Given: X = {4n - 3n - 1: n ∈ N} Y = {9(n - 1): n ∈ N} X can take values {0, 9, 54, 243,... View Article
1) B ⊆ A 2) A ⊆ B 3) A ⋂ B = ɸ 4) A ⋃ B = A Solution: (3) A = {(x, y) : y = ex, x ∈ R} B = {(x, y) : y = x, x ∈ R} A ⋂ B = ɸ... View Article
(1)20! (2)2! 18! (3)18! (4) None of the above Answer: (2) 2! x 3! Solution: Number of guests here = 20 Number of host = 1 Total number of... View Article
(1)360 (2)192 (3)96 (4)48 Answer: (3) 96 Solution: Given, COCHIN is the word There are two C’s in the word. Therefore, a number of words,... View Article
(1) 9! 3! (2) 9!/2!.2! (3) 9!/2!2!3! (4) 9!/2!3! Answer: (2) 9!/2!.2! Solution: Given, the word is CONSEQUENCE There are 2 of C’s, 3 of... View Article
(1) 40 (2) 60 (3) 80 (4) 100 Answer: (1) 40 Solution: Total number of arrangements of BANANA is 6!/(3!2!) = 60 Number of arrangements in... View Article
