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What Is Capacitor Formula

The most basic governing equation for a capacitor is as follows: C = Q / V Here, C = capacitance in Farads Q = charge held on the plates... View Article

Who Named Positive And Negative Charges

The term positive and negative charges were first coined by Benjamin Franklin in the year 1747. Franklin while conducting experiments with... View Article

What Has A Ph Of 1

The compound that has a pH level of 1 is the stomach or gastric acid. The acid mainly consists of other compounds that include hydrochloric acid,... View Article

The Number Of Ways In Which 9 Persons Can Be Divided Into Three Equal Groups Is

1) 1680 2) 840 3) 560 4) 280 Answer: (4) 280 Solution: There are 9 persons that are to be divided into 3 groups Number of possible ways =... View Article

In How Many Ways Can The Letter Of The Word Delhi Be Arranged So That The Vowels Occupy Only The Even Places

1) 12 2) 24 3) 60 4) 6 Answer: (1) 12 Solution: DELHI has five letters There are two vowels: E and I Therefore, two vowels can be arranged... View Article

How Many Words Can Be Formed From The Letters Of The Word Courtesy Whose First Letter Is C And The Last Letter Is Y

1) 6! 2) 8! 3) 2(6)! 4) 2(7)! Answer: (1) 6! Solution: Given, the word COURTESY. There are total 8 letters As per the given condition,... View Article

The Number Of 4 Digit Even Numbers That Can Be Formed Using 0123456 Without Repetition Is

1) 120 2) 300 3) 420 4) 20 Answer: (3) 420 Solution: For even number, the last digit could be among 0,2,4,6 Since, first digit cannot be... View Article

The Number Of Numbers That Can Be Formed With The Help Of The Digits 1234321 So That Odd Digits Always Occupy Odd Places Is

1) 24 2) 18 3) 12 4) 30 Answer: (2) 18 Solution: Given, 1,2,3,4,3,2,1 Odd digits are 1,3,3,1 4 odd digits can be arranged at 4 odd places... View Article

Numbers Greater Than 1000 But Not Greater Than 4000 Which Can Be Formed With The Digits 01234 Repetition Of Digits Is Allowed Are

1) 350 2) 375 3) 450 4) 576 Answer: (2) 375 Solution: There are Five digits given: 0,1,2,3,4 1000<Numbers<4000 At unit place we can... View Article

Total Number Of Four Digit Odd Numbers That Can Be Formed Using 012357 Are

1) 216 2) 375 3) 400 4) 720 Answer: (4) 720 Solution: Odd numbers are 1,5,7 Total number of four digit odd numbers that can be formed using... View Article

In How Many Ways N Books Can Be Arranged In A Row So That Two Specified Books Are Not Together

1) n! – (n – 2) ! 2) (n – 1)! - (n – 2) 3) n! – 2(n – 1)! 4) (n – 2) n! Answer: (3) n! – 2(n – 1)! Solution: Total number of arrangement of... View Article

The Number Of Words Which Can Be Formed From The Letters Of The Word Maximum If Two Consonants Cannot Occur Together Is

1) 4! 2) 3! × 4! 3) 7! 4) None of these Answer: 4! Solution: Given, the word MAXIMUM Here we have two consonants, i.e., M and X We need to... View Article

Assuming That No Two Consecutive Digits Are Same The Number Of N Digit Numbers Is

1) n! 2) 9! 3) 9n 4) n9 Answer: n! Solution: Assuming that no two consecutive digits are the same, the number of n digit numbers, is n!.... View Article

If 12pr 1320 Then R Is Equal To

1) 5 2) 4 3) 3 4) 2 Answer: (3) 3 Solution: 12Pr = 1320 12!/(12-r)! = 1320 (12-r)! = 12!/1320 (12-r)! = 9! 12 - r = 9 r = 3... View Article

The Number Of 3 Digit Odd Numbers That Can Be Formed By Using The Digits 123456 When The Repetition Is Allowed Is

1) 60 2) 108 3) 36 4) 30 Answer: (2) 108 Solution: For odd numbers the unit place should have 1,3,5 For tens and hundreds place, we have =... View Article

The Number Of Ways In Which First Second And Third Prizes Can Be Given To 5 Competitors Is

1) 10 2) 60 3) 15 4) 125 Answer: (2) 60 Solution: We need to give three prizes to 5 competitors. Therefore, number of possible ways are =... View Article

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 set of integers is... View Article

Number Of Ways In Which 7 Distinct Objects Can Be Distributed Among 4 Childrens Is

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

The Figures 45678 Are Written In Every Possible Order The Number Of Numbers Greater Than 56000 Is

1) 72 2) 96 3) 90 4) 98 Answer: (3) 90 Solution: There are in total 5 numbers 4,5,6,7,8. We need to form numbers greater than 56000 Let... View Article

Six Identical Coins Are Arranged In A Row The Number Of Ways In Which The Number Of Tails Is Equal To The Number Of Heads Is

1) 20 2) 9 3) 120 4) 40 Answer: (1) 20 Solution: If six coins arranged in a row and if number of tails and heads appears equal, then;... View Article