Home
Class 11
MATHS
Ashok, Usha, Rani, Sonu are to give spee...

Ashok, Usha, Rani, Sonu are to give speeches in a class. The teacher can arrange the order of their presentation in

A

4 ways

B

12 ways

C

256 ways

D

24 ways

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PERMUTATIONS AND COMBINATIONS

    OMEGA PUBLICATION|Exercise Important Questions from Miscellaneous Exercise|8 Videos

  • MATHEMATICAL REASONING

    OMEGA PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS |10 Videos

  • PRINCIPLE OF MATHEMATICAL INDUCTION

    OMEGA PUBLICATION|Exercise Multiple Choice Questions|10 Videos

Similar Questions

Explore conceptually related problems

If the reaction between A and B to give C shows first order kinetics in A and Second order in B, the rate equation can be writen as :

The students in a class are seated according to the marks in the previous examination. Once it so happens that four of these students get equal marks and therefore the same rank. To decide their seating arrangement, the teacher wants to write down all possible arrangements, one in each of separate bits of paper, in order to choose one of these by lots. How many bits of paper are required ?

In a class there are 30 boys and 18 girls. The teacher wants to select one boy and one girl to represent the class for a quiz competition. In how many ways can the teacher make this selection ?

The following table gives the length of three copper wires, their diameters and the applied potential difference across their ends. Arrange the wires in increasing order according to the following The drift speed of electrons through them?

The following table gives the length of three copper wires, their diameters and the applied potential difference across their ends. Arrange the wires in increasing order according to the following The magnitude of the electric field within them?

The following table gives the length of three copper wires, their diameters and the applied potential difference across their ends. Arrange the wires in increasing order according to the following The current density within them.

Find the number of different signals that can be made by arranging at least three flags in order on a vertical pole, if 6 different flags are available.

The integrated rate equations can be fitted with kinetic data to determine the order of a reaction. The integrated rate equations for zero, first and second order reactions are : Zero order : [Al =-kt+ [A]_0 First order : log [A] = -(kt)/2.303 + log [A]_0 Second order : 1/([A])=kt+1/[A]_0 These equations can also be used to calculate the halt life periods of different reactions, which give the time during which the concentration of a reactant is reduced to half of its initial concentration, i.e, at time t_(1//2), [A] = [A]_0//2 Answer the following (1 to 5) question : For a second order reaction, the correct plot of t_(1//2) vs. 1//[A]_0 is

OMEGA PUBLICATION-PERMUTATIONS AND COMBINATIONS-Multiple Choice Questions (MCQs)
  1. Seven women.and seven men are to sit around a circular table, such tha...

    Text Solution

    |

  2. In how many ways can 5 different beads be arranged to form a necklace?

    Text Solution

    |

  3. The value of ""^(15)C(11)+""^(15)C(10) is equal to

    Text Solution

    |

  4. If \ ^(43)C(r-6)=\ ^(43)C(3r+1)\ then the value of r is

    Text Solution

    |

  5. ""^nCr+2^nC(r+1)+""^nC(r+2) is equal to (2 le r le n)

    Text Solution

    |

  6. Every body in a room shakes hand with every body else. The total numbe...

    Text Solution

    |

  7. There are n points in a plane of which p points are collinear. How man...

    Text Solution

    |

  8. There are n points in a plane of which p points are collinear. How man...

    Text Solution

    |

  9. The number of diagonals that can be drawn by joining the vertices of a...

    Text Solution

    |

  10. A polygon has 44 diagonals. The number of its sides is

    Text Solution

    |

  11. The value of ""^8P7 is

    Text Solution

    |

  12. P(n, 6) = 3 P(n, 5), then n is equal to

    Text Solution

    |

  13. If 2 ""^nP3 = ""^(n+1)P3, then n is equal to

    Text Solution

    |

  14. The value of ""^nPr, and ""^nCr will be equal when

    Text Solution

    |

  15. (C(9,7))/(C(9,5))=?

    Text Solution

    |

  16. The numbers of diagonals in an n sided figure is equal to

    Text Solution

    |

  17. If ""^(35)C(n+7)=""^(35)C(4n-2) then all the values of n are given by

    Text Solution

    |

  18. Ashok, Usha, Rani, Sonu are to give speeches in a class. The teacher c...

    Text Solution

    |

  19. How many words can be formed from the letters of the word 'COMMITTEE'?

    Text Solution

    |

  20. in how many ways can 5 red and 4 white balls be draw from a bag contai...

    Text Solution

    |