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A Bag Contains 6 Red 5 White And 4 Black Balls Two Balls Are Drawn The Probability That None Of Them Is Red Is

1) 12/35 2) 6/35 3) 4/35 4) None of these Solution: Option (1) 12/35 Total number of balls = 15 If two balls are drawn, then the... View Article

1) 14/95 2) 7/95 3) 1/95 4) None of these Solution: Option (1) 14/95 Total number of tickets = 20 If two tickets are drawn, the... View Article

1) 2/n 2) 1/n 3) 2/(n-1)! 4) None of these Solution: Option (1) 2/n We can arrange n cadets in n! Ways. Total cases = n!... View Article

1) p1 = p2 2) p1 < p2 3) p1 > p2 4) None of these Solution: Option (3) p1 > p2 Finding p1: The probability that both the... View Article

1) 5/1296 2) 5/1944 3) 5/2592 4) None of these Solution: Option (3) 5/2592 Given that, a cube has 4 blank faces, one face marked as... View Article

1) 1/6 2) 5/6 3) 1/3 4) None of these Solution: Option (1) ? Let Ai be the event that the ith object will occupy the nth place For... View Article

1) 3/5 2) 2/5 3) 4/5 4) 1/5 Solution: Option (3) 4/5 Total cases = 10!/2! Total ways that the letter “I” come together = 9! The... View Article

1) 64/5525 2) 16/5525 3) 128/5525 4) 64/625 Solution: Option (2) 16/5525 Total number of cards = 52. Total cases = 52C3 In a... View Article

1) 2/3 2) 2/7 3) 1/2 4) 3/4 Solution: Option (3) ½. Total ways to form 3 digit numbers using 1, 2, 3 and 4 = 4P3 = 4! = 24 ways. If... View Article

1) 1/42 2) 41/42 3) 2/63 4) 1/7 Solution: Option (2) 41/42 Total cases = 4C1. 6C4 + 4C2. 6C3 + 4C3. 6C2+ 4C4. 6C1 +6C5 = 60+... View Article

1) Both balls are white 2) One ball is white and one is black 3) Both balls are black 4) All of the above are equals Solution: Option... View Article

1) 17/35 2) 18/35 3) 72/175 4) 13/175 Solution: Option (A) 17/35 Total number of tickets = 50 Hence, total cases = 50C2 Out of... View Article

1) 1/2 2) 1/64 3) 8C4/8 4) 8C4/28 Solution: Option (4) 8C4/28 Total cases= 28 (As a coin is tossed 8 times) Favourable cases =... View Article

1) 1/35 2) 1/14 3) 1/15 4) None of these Solution: Option (3) 1/14 In a word, “ASSASSIN”, apart from the letter S, there are 4 other... View Article

1) 5/204 2) 7/102 3) 3/68 4) 1/13 Solution: Option (3) 3/68 Total number of balls = 18 balls Out of 18 balls, three balls are drawn... View Article

1) 1-(2/n) 2) 2/(n-1) 3) 1-(1/n) 4) None of these Solution: Option (1) 1-(2/n) Total number of cases = nC2 Let A be the event... View Article

1) 1/3 2) 2/3 3) 2/7 4) 1/7 Solution: Option (4) 1/7 Total cases = (15-1)! = 14! If 4 persons are between A and B, then the total... View Article

1) 5/11 2) 21/55 3) 4/11 4) None of these Solution: Option (1) 21/55 Total cases = 11C2 Favourable cases = 7C2 Therefore the... View Article

1) 22/145 2) 13/15 3) 1/18 4) None of these Solution: Option (1) 22/145 Total cases = 30C2 Favourable cases = 12C2 Hence, the... View Article

1) 11/50 2) 13/50 3) 37/50 4) None of these Solution: Option (3) 37/50 Given that, the two tickets are drawn from 25 tickets. The... View Article