A Pack Of Cards Contains 4 Aces 4 Kings 4 Queens And 4 Jacks Two Cards Are Drawn At Random The Probability That At Least One Of These
1) 9/20 2) 3/16 3) 1/6 4) 1/9 Solution: Option (1) 9/20 Total cases = 16C2 The probability that at... View Article
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Three Cards Are Drawn At Random From A Pack Of 52 Cards What Is The Chance Of Drawing Three Aces
1) 3/5525 2) 2/5525 3) 1/5525 4) None of these Solution: Option (3) 1/5525 Total cases = 52C3 = 22100... View Article
A Box Contains 10 Red Balls And 15 Green Balls If Two Balls Are Drawn In Succession Then The Probability That One Is Red And Other Is Green Is
1) 1/3 2) 1/2 3) 1/4 4) None of these Solution: Option (2) ½ Total cases = 25C2 = 300... View Article
A Bag Contains 8 Red And 7 Black Balls Two Balls Are Drawn At Random The Probability That Both The Balls Are Of The Same Colour Is
1) 14/15 2) 11/15 3) 7/15 4) 4/15 Solution: Option (3) 7/15 Total cases = 15C2 = 105 Favourable cases... View Article
From Eighty Cards Numbered 1 To 80 Two Cards Are Selected Randomly The Probability That Both The Cards Have The Numbers Divisible By 4 Is
1) 21/316 2) 19/316 3) 1/4 4) None of these Solution: Option (2) 19/316. Total cases = 80C2 Favourable cases... View Article
Two Numbers Are Selected Randomly From The Set S 1 2 3 4 5 6 Without Replacement One By One The Probability That Minimum Of The Two
1) 1/15 2) 14/15 3) 1/5 4) 4/5 Solution: Option (4) 4/5 Given that, S = {1, 2,3, 4, 5,... View Article
Three Integers Are Chosen At Random From The First 20 Integers The Probability That Their Product Is Even Is
1) 2/19 2) 3/29 3) 17/19 4) 4/19 Solution: Option (3) 17/19 Total cases = 20C3 From the first 20... View Article
Out Of 30 Consecutive Numbers 2 Are Chosen At Random The Probability That Their Sum Is Odd Is
1) 14/29 2) 16/29 3) 15/29 4) 10/29 Solution: Option (3) 15/29 Total cases = 30C2 = 435 The sum... View Article
A Bag Contains 5 Black 4 White Balls And 3 Red Balls If A Ball Is Selected Random Wise The Probability That It Is A Black Or Red Ball Is
1) 1/3 2) 1/4 3) 5/12 4) 2/3 Solution: Option (4) ⅔ Total cases = 12C1 = 12 Favourable cases... View Article
Among 15 Players 8 Are Batsmen And 7 Are Bowlers Find The Probability That A Team Is Chosen Of 6 Batsmen And 5 Bowlers
1) (8C6 . 7C5)/15C11 2) (8C6 + 7C5)/15C11 3) 15/28 4) None of these Solution: Option (1) (8C6 . 7C5)/15C11... View Article
In A Lottery Were 90 Tickets Numbered 1 To 90 Five Tickets Were Drawn At Random The Probability That Two Of The Tickets Drawn Numbers 15
1) 2/801 2) 2/623 3) 1/267 4) 1/623 Solution: Option (1) 2/801 Total cases = 90C5 Favourable cases = 88C3... View Article
Four Boys And Three Girls Stand In A Queue For An Interview Probability That They Will In Alternate Position Is
1) 1/34 2) 1/35 3) 1/17 4) 1/68 Solution: Option (2) 1/35 Total cases = 7! Ways Favourable cases =... View Article
If A Committee Of 3 To Be Chosen From A Group Of 38 People Of Which You Are A Member What Is The Probability That You Will Be On
1) 38C3 2) 37C2 3) 37C2/38C3 4) 666/8436 Solution: Option (3) 37C2/38C3 Total cases = 38C3 Favourable cases = 37C2... View Article
Ten Students Are Seated At Random In A Row The Probability That Two Particular Students Are Not Seated Side By Side Is
1) 4/5 2) 3/5 3) 2/5 4) 1/5 Solution: Option (1) 4/5 Total number of ways = 10! ways. Two... View Article
If Four Vertices Of A Regular Octagon Are Chosen At Random Then The Probability That The Quadrilateral Formed By Them Is A Rectangle Is
1) 1/8 2) 2/21 3) 1/32 4) 1/35 Solution: Option (4) 1/35 In an octagon, there are 8 vertices. Out... View Article
A Bag Contains 3 Red 4 White And 5 Black Balls Three Balls Are Drawn At Random The Probability Of Being Their Different Colours Is
1) 3/11 2) 2/11 3) 8/11 4) None of these Solution: Option (1) 3/11 Total cases = 12C3 Favourable cases... View Article
Five Digits Numbers Are Formed Using The Digits 1 2 3 4 5 6 And 8 What Is The Probability That Have Even Digits At Both The Ends
1) 2/7 2) 3/7 3) 4/7 4) None of these Solution: Option (1) 2/7 Total cases = 7P5, where P... View Article
Two Numbers Are Selected Are Selected At Random From 1 2 3 100 And Are Multiplied Then The Probability Correct To Two Places Of Decimals
1) 0.55 2) 0.44 3) 0.22 4) 0.33 Solution: Option (1) 0.55 Total cases = 100C2 Favourable cases = 33C1.67C1... View Article
A Committee Consists Of 9 Experts Taken From Three Institutions A B And C Of Which 2 Are From A 3 From B And 4 From C If Three Experts Resign
1) 1/729 2) 1/24 3) 1/21 4) 2/7 Solution: Option (4) 2/7 Total cases = 9C3 Favourable cases = 2C1... View Article
The Probability That The Three Cards Drawn From A Pack Of 52 Cards Are All Red Is
1) 1/17 2) 3/19 3) 2/19 4) 2/17 Solution: Option (4) 2/17 Total number of cards = 52 Total cases... View Article
