Archives

A Book Contains 1000 Pages Numbered Consecutively The Probability That The Sum Of The Digits Of The Marked Number Of A Page Is 9 Is

1) 55/1000 2) 0 3) 33/1000 4) 44/1000 Solution: Option (1) 55/1000 Total number of pages in a book = 1000 Favourable outcomes: One... View Article

A Single Letter Is Selected At Random From The Word Probability The Probability That The Selected Letter Is A Vowel Is

1) 2/11 2) 3/11 3) 4/11 4) 0 Solution: Option (3) 4/11 In the word “probability”, the total number of words = 11 Total number of... View Article

From A Wellshuffled Pack Of Cards One Card Is Drawn At Random The Probability That The Card Is Drawn Is An Ace Is

1) 1/13 2) 4/13 3) 3/52 4) None of these Solution: Option (1) 1/13 Total number of cards in a pack = 52 Total number of aces = 4... View Article

If Two Balanced Dice Are Tossed Once The Probability Of The Event That The Sum Of The Integers Coming On The Upper Sides Of The Two Dice Is 9 Is

1) 7/18 2) 5/36 3) 1/9 4) ⅙ Solution: Option (3) 1/9 If two dice are tossed, the total number of sample space = 36 The number of... View Article

A And B Toss A Coin Alternatively The First To Show A Head Being The Winner If A Starts Game The Chance Of His Winning Is

1) 5/8 2) 1/2 3) 1/3 4) ⅔ Solution: Option (4) ⅔ To win A, the outcomes of A should be H, TTH, TTTTH, …. = (1/21) +(1/23) +(1/25)... View Article

The Probability Of Drawing A White Ball From A Bag Containing 3 Black Balls And 4 White Balls Is

1) 4/7 2) 3/7 3) 1/7 4) None of these Solution: Option (1) 4/7 Total number of balls in a bag = 4+3 = 7 balls The probability of... View Article

In A Single Throw Of Two Dice The Probability Of Getting More Than 7 Is

1) 7/36 2) 7/12 3) 5/12 4) 5/36 Solution: Option (3) 5/12 The total number of ways that a die can fall = 36 ways The total number... View Article

Two Cards Are Drawn Successively With Replacement From A Pack Of 52 Cards The Probability Of Drawing Two Aces Is

1) 1/169 2) 1/221 3) 1/2652 4) 4/663 Solution: Option (1) 1/169 Total number of cards = 52 The probability of getting an ace = 4/52... View Article

If Pa 23 Pb 12 And Pa Union B 56 Then Events A And B Are

1) Mutually exclusive 2) Independent as well as mutually exhaustive 3) Independent 4) Dependent only on A Solution: Option (3)... View Article

Let A B C Be Three Mutually Independent Events Consider Two Statements S1 And S2 Then

1) Both S1 and S2 are true 2) Only S1 is true 3) Only S2 is true 4) Neither S1 nor S2 is true Solution: Option (1) both S1 and S2 are... View Article

Two Fair Dice Are Tossed Let A Be The Event That The First Die Shows An Even Number And B Be The Event That The Second Die Shows An Odd

1) Mutually exclusive 2) Independent and mutually exclusive 3) Dependent 4) None of the above Solution: Option (4) None of the above... View Article

A Sum Of Money Is Rounded Off To The Nearest Rupee The Probability That The Roundoff Error Is At Least Ten Paise Is

1) 79/100 2) 80/100 3) 81/100 4) None of these Solution: Option (3) 81/100 Here, the sample space = -0.50, -0.49, -0.48, …..0.00,... View Article

Is Kf A Weak Acid

Yes, Potassium fluoride (KF) is a weak acid. Visit BYJU’S - The Learning App to know more about the solubility product constant in detail.... View Article

Is Kbr A Strong Acid

Potassium bromide (KBr) a neutral solution. Visit BYJU’S - The Learning App to know more about the properties of solutions in detail.... View Article

Is Hbr Stronger Than H2e

Yes, hydrogen bromide (HBr) is stronger than hydrogen selenide (H2Se). Visit BYJU’S - The Learning App to know more about the acids and bases in... View Article

Is Honey Alkaline Or Acidic

Honey is acidic by nature since its pH level ranges from 3.4 to 6.1. Visit BYJU’S - The Learning App to know more about the acids and bases in detail.... View Article

Which Method Is Suitable To Remove Hardness Of Water At Home

At home, we can use methods like boiling to remove the hardness of water. It is a temporary method. Visit BYJU’S - The Learning App to know more... View Article

Why Cant Magnetic Field Lines Cross

Magnetic field lines are continuous in nature which start from the north pole and end at the south pole. They form closed loops without... View Article

Is Alum The Same As Aluminium

Alum is different from Aluminium. Visit BYJU’S - The Learning App to know more about the uses of alloys in detail.... View Article

Why Is Sulfur Bad For You

Sulfur in minimum quantity is not toxic, but sulphur in excess causes health hazards. When sulfur burns it creates a toxic gas called sulfur... View Article