Maths-
General
Easy
Question
12 guests at a dinner party are to be seated along a circular table. Supposing that the master and mistress of the house have fixed seats opposite one another, and that there are two specified guests who must always, be placed next to one another, the number of ways in which the company can be placed, is-
- 20 . 10!
- 22 . 10!
- 44 . 10!
- None of these
The correct answer is: 20 . 10!
Related Questions to study
Maths-
In a conference 10 speakers are present. If S1 wants to speak before S2 and S2 wants to speak after S3, then the number of ways all the 10 speakers can give their speeches with the above restriction if the remaining seven speakers have no objection to speak at any number is-
In a conference 10 speakers are present. If S1 wants to speak before S2 and S2 wants to speak after S3, then the number of ways all the 10 speakers can give their speeches with the above restriction if the remaining seven speakers have no objection to speak at any number is-
Maths-General
Maths-
The streets of a city are arranged like the lines of a chess board. There are m streets running North to South & 'n' streets running East to West. The number of ways in which a man can travel from NW to SE corner going the shortest possible distance is-
The streets of a city are arranged like the lines of a chess board. There are m streets running North to South & 'n' streets running East to West. The number of ways in which a man can travel from NW to SE corner going the shortest possible distance is-
Maths-General
Maths-
The number of permutations which can be formed out of the letters of the word 'SERIES' taking three letters together is-
The number of permutations which can be formed out of the letters of the word 'SERIES' taking three letters together is-
Maths-General
Maths-
The number of ways in which 10 different balls can be placed in three different boxes so that at least one box remains empty
The number of ways in which 10 different balls can be placed in three different boxes so that at least one box remains empty
Maths-General
Maths-
The number of ways in which 5 different balls can be placed in three different boxes so that no box remains empty -
The number of ways in which 5 different balls can be placed in three different boxes so that no box remains empty -
Maths-General
Maths-
The number of ways in which n distinct objects can be put into two identical boxes so, that no box remains empty is-
The number of ways in which n distinct objects can be put into two identical boxes so, that no box remains empty is-
Maths-General
Maths-
In a hall there are 10 bulbs and their 10 buttons. In how many ways this hall can be enlightened?
In a hall there are 10 bulbs and their 10 buttons. In how many ways this hall can be enlightened?
Maths-General
Maths-
All possible two-factor products are formed from the numbers 1, 2, ----------100. The number of factors out of the total obtained which are multiple of 3 is -
All possible two-factor products are formed from the numbers 1, 2, ----------100. The number of factors out of the total obtained which are multiple of 3 is -
Maths-General
Maths-
The number of even divisors of 1600 is-
The number of even divisors of 1600 is-
Maths-General
Physics-
In a step-up transformer, the turn ratio is 1:2. A Leclanche cell (e.m.f. 1.5V) is connected across the primary. The voltage developed in the secondary would be
In a step-up transformer, the turn ratio is 1:2. A Leclanche cell (e.m.f. 1.5V) is connected across the primary. The voltage developed in the secondary would be
Physics-General
Maths-
The equation 
has
The equation has
Maths-General
Physics-
In a uniform magnetic field of induction
, a wire in the form of semicircle of radius
rotates about the diameter of the circle with angular frequency
. If the total resistance of the circuit is 
, the mean power generated per period of rotation is
In a uniform magnetic field of induction, a wire in the form of semicircle of radius rotates about the diameter of the circle with angular frequency. If the total resistance of the circuit is , the mean power generated per period of rotation is
Physics-General
Physics-
A generator at a utility company produces 100 A of current at 4000 V. The voltage is stepped up to 240000 V by a transformer before it is sent on a high voltage transmission line. The current in transmission line is
A generator at a utility company produces 100 A of current at 4000 V. The voltage is stepped up to 240000 V by a transformer before it is sent on a high voltage transmission line. The current in transmission line is
Physics-General
Physics-
A coil self inductance L = 0.04 H and resistance R = 12
, connected to 220 V, 50Hz supply, what will be the current flow in the coil?
A coil self inductance L = 0.04 H and resistance R = 12, connected to 220 V, 50Hz supply, what will be the current flow in the coil?
Physics-General
Physics-
A helicopter rises vertically with a speed of 100 ms-1. If helicopter has length 10 m and horizontal component of earth’s magnetic field is 
then the induced emf between the tip of nose and tail of helicopter is
A helicopter rises vertically with a speed of 100 ms-1. If helicopter has length 10 m and horizontal component of earth’s magnetic field is then the induced emf between the tip of nose and tail of helicopter is
Physics-General
