Latest Posts

A B And C Are Contesting The Election For The Post Of Secretary Of A Club Which Does Not Allow Ladies To Become Members The Probabilities Of A

1) 26/45 2) 28/45 3) 27/45 4) None of these Solution: Option (1) 26/45 The probability that ladies will be... View Article

All The Spades Are Taken Out From A Pack Of Cards The Probability That The Ace Comes In The 4th Draw Is

1) 1/13 2) 10/13 3) 3/13 4) None of these Solution: Option (1) 1/13 Total number of cards in a... View Article

A Man Firing At A Distant Target Has 10 Chance Of Hitting The Target In One Shot The Number Of Times He Must Fire At The Target To Have About 50

1) 10 2) 9 3) 7 4) 8 Solution: Option (3) 7 The probability of hitting a target in one... View Article

A Point Is Selected At Random From The Interior Of The Circle The Probability That The Point Is Closer To The Centre Than The Boundary Of The Circle

1) 1/2 2) 1/3 3) 1/4 4) None of these Solution: Option (3) ¼ Let “r” be the radius of... View Article

A Pack Of Cards Is Counted With Face Downwards One Card Is Missing Card Is Drawn And Is Found To Be Red The Probability That The Missing Card Is Red Is

1) 12/51 2) 18/51 3) 25/51 4) None of these Solution: Option (3) 25/51 In a pack, there are 52... View Article

A Contest Consists Of Predicting The Results Win Draw Or Defeat Of 10 Football Matches The Probability That One Entry Contains At Least 5 Correct

1) 12585/310 2) 12385/310 3) 9385/310 4) None of these Solution: Option (1) 12585/310 The probability of predicting correct result,... View Article

A Bag Contains N White And N Red Balls Pairs Of Balls Are Drawn Without Replacement Until The Bag Is Empty The Probability That Each Pair

1) 2n /2nCn 2) 2n / 2nCn 3) 1/2nCn 4) None of these Solution: Option (2) 2n / 2nCn Assume... View Article

In A Game Odd Man Out Each Of M Gte 2 Person Tosses A Coin To Determine Who Will Buy Refreshments For The Entire Group The Odd Man Out Is

1) 1/2m-1 2) m-1/2m-1 3) m/2m-1 4) None of these Solution: Option (3) m/2m-1 Let A represents the event, that... View Article

If A Number Of Two Digits Is Formed With The Digits 2 3 5 7 9 Without Repetition Of Digits The Probability That The Number Formed Is 35 Is

1) 1/10 2) 1/20 3) 1/30 4) None of these Solution: Option (2) 1/20 Let S be the sample space,... View Article

On A Chessboard If Two Squares Are Chosen The Probability That They Have A Side In Common Is

1) 1/9 2) 1/18 3) 1/27 4) None of these Solution: Option (2) 1/18 In a chess board, we have... View Article

A Player Randomly Chooses One Of The Coin A B Coin A Has A Probability Of Heads 3by4 And Coin B Has A Probability Of Heads 1by4 He Tosses

1) 3/8 2) 5/8 3) 7/8 4) None of these Solution: Option (1) ⅜ Assume that, A is the event... View Article

Two Persons A And B Have Respectively N Plus 1 And N Coins Which They Toss Simultaneously Then The Probability That A Will Have More Heads

1) 1/2 2) >1/2 3) <1/2 4) None of these Solution: Option (1) ½ Let a and a’ be the... View Article

A Bag Has 13 Red 14 Green And 15 Black Balls The Probability Of Getting Exactly 2 Blacks On Pulling Out 4 Balls Is P1 Now The Number Of Each

1) p1 < p2 2) p1 = p2 3) p1 > p2 4) None of these Solution: Option (3) p1... View Article

The Probability That A Certain Beginner At Golf Gets A Good Shot If He Uses The Correct Club Is 13 And The Probability Of A Good Shot With

1) 2/3 2) 1/15 3) 4/15 4) 7/15 Solution: Option (3) 4/15 The probability of correct club = ⅕ Hence,... View Article

A Person Throws Two Dice One The Common Cube And The Other A Regular Tetrahedron The Number On The Lowest Face Being Taken In The Case

1) 1/2 2) 1/3 3) 1/6 4) None of these Solution: Option (3) ⅙ The common cubic dice have numbers... View Article

There Are M Persons Sitting In A Row Two Of These Are Selected At Random The Probability That The Two Selected Persons Are Not Together Is

1) 1/(m+1) 2) 1-(2/m) 3) 1-(2/m+1) 4) [m(m+1)]/[(m-1)(m-2)] Solution: Option (2) 1-(2/m) The number of ways, selecting two persons out... View Article

A Fair Coin Is Tossed 12 Times The Probability That Two Heads Do Not Occur Consecutively Is

1) 375/4096 2) 376/4096 3) 377/4096 4) None of these Solution: Option (3) 377/4096 Total outcome = 212 No. of.... View Article

The Probability Of Getting Atleast One Tail In 4 Throws Of A Coin Is

1) 15/16 2) 1/16 3) 1/4 4) None of these Solution: Option (1) 15/16 The probability of getting no tail... View Article

An Urn Contains 4 White And 3 Red Balls Three Balls Are Drawn With Replacement From This Urn Then The Standard Deviation Of The Number Of Red

1) 6/7 2) 36/49 3) 5/7 4) 25/49 Solution: Option (1) 6/7 Let X represent the number of red balls... View Article

For A Binomial Variate X With N Equals 6 If Px Equals 2 Equals 9 Px Equals 4 Then Its Variance Is

1) 8/9 2) 1/4 3) 9/8 4) 4 Solution: Option (3) 9/8 Given that, P(X = 2) = 9 P(X... View Article

«
1
…
3,931
3,932
3,933
3,934
3,935
…
5,472
»