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Let The Eleven Letters Ab K Denote An Arbitrary Permutation Of The Integers 1211 Then A 1b 2c 3k 11

1) Necessarily zero 2) Always odd 3) Always even 4) None of these Answer: (3) Always even Solution: Given, the... View Article

1) P(7,4) 2) 7! 3) 4! 4) None of these Answer: (1) P(7,4) Solution: Number of ways in which 7... View Article

1) 72 2) 96 3) 90 4) 98 Answer: (3) 90 Solution: There are in total 5 numbers 4,5,6,7,8. We... View Article

1) 20 2) 9 3) 120 4) 40 Answer: (1) 20 Solution: If six coins arranged in a row and... View Article

1) 18 2) 432 3) 108 4) 144 Answer: (3) 108 Solution: We can form four digits numbers using 3,4,5,6.... View Article

1) r! 2) r2 3) rn 4) None of these Answer: (1) r! Solution: We can write, r!=r(r−1)(r−2)(r−3)(r−4)(r−5)……….3.2.1 Product of... View Article

1) 20 2) 30 3) 10 4) 60 Answer: (4) 60 Solution: Number of ways three passengers can sit in... View Article

1) 1024 2) 625 3) 120 4) 600 Answer: (1) 1024 Solution: 5 prizes can be distributed among four students... View Article

1) 3 × 53 2) 53 × 3 3) 36 4) None of these Answer: (3) 36 Solution: If we... View Article

1) 1296 2) 625 3) 671 4) None of these Answer: (3) 671 Solution: Number of possible outcomes when four... View Article

1) 9 × 9! 2) 9! 3) 10! 4) None of these Answer: (1) 9 x 9! Solution: There are... View Article

1) (mn)n 2) mmn 3) nmn 4) None of these Answer: (1) (mn)n Solution: mn letters can be posted in... View Article

1) 4 2) 5 3) 6 4) 7 Answer: (3) 6 Solution: nP4:nP5 = 1:2 [n!/(n-4)!]:[n!/(n-5)!] = 1:2 (n-5)!:(n-4)! =... View Article

1) 100 2) 200 3) 300 4) 400 Answer: (3) 300 Solution: Between 999 and 10000 we have all four... View Article

1) 18720 2) 182730 3) 17280 4) 12780 Answer: (3) 17280 Solution: Given, 9 balls are to be placed in... View Article

1) 12 2) 16 3) 4 4) 8 Answer: (1) 12 Solution: If a man goes Gwalior to Bhopal, he... View Article

1) 36 2) 60 3) 84 4) 120 Answer: (3) 84 Solution: Given, 1,2,3,4,5 are five digits We have to... View Article

1) 2/13 2) 8/663 3) 4/663 4) 103/663 Solution: Option (3) 4/663 In a pack, there are 52 cards. The... View Article

1) 1/13 2) 2/13 3) 3/13 4) 4/13 Solution: Option (2) 2/13 In a pack, total number of cards =... View Article

1) 1/5 2) 3/5 3) 3/40 4) 29/40 Solution: Option (4) 29/40 Given that, the probability of India winning the... View Article