Home
Class 11
MATHS
There are five books on Mathematics and ...

There are five books on Mathematics and 6 books on Physics in a book shop. In how many ways can a student buy : (i) a Mathematics book and a Physics book (ii) either a Mathematics book or a Physics book?

Text Solution

Verified by Experts

1)Maths`=.^5C_1`
Physics`=.^6C_1`
Total`=.^5C_1*.^6C_1=5*6=30`
2)Maths`=.^5C_1`
Physics`=.^6C_1`
Total`=.^5C_1*.^6C_1=11`.
Promotional Banner

Topper's Solved these Questions

  • PARABOLA

    RD SHARMA|Exercise Solved Examples And Exercises|81 Videos

  • PROBABILITY

    RD SHARMA|Exercise Solved Examples And Exercises|280 Videos

Similar Questions

Explore conceptually related problems

Best Books for Physics

There are 6 books on mathematics, 4 books on physics annd 5 books on chemistry in a book shop. The number of ways can a student purchase either a book on mathematics or a book on chemistry, is

There are 8 math's books and 6 science books in a almirah. In how many wayscan 4 books of each subject be selected?

There are 3 books of mathematics,4 books of Physics and 5 on English.How many different collection can be made such that each collection consist of :

In how many ways can 12 books be divided in 3 students equally?

In how many ways can 4 different books, one each in chemistry, physics, biology and mathematics, be arranged on a shelf?

RD SHARMA-PERMUTATIONS-Solved Examples And Exercises
  1. From among the 36 teachers in a college, one principal, one vice-pr...

    Text Solution

    |

  2. In how many ways can 6 persons stand in a queue?

    Text Solution

    |

  3. There are five books on Mathematics and 6 books on Physics in a book ...

    Text Solution

    |

  4. Seven athletes are participating in a race. In how many ways can the ...

    Text Solution

    |

  5. If a group of n distinct objects, the number of arrangements of 4 obj...

    Text Solution

    |

  6. If the letters of the word ‘MOTHER’ are written in all possible orders...

    Text Solution

    |

  7. In a room there are 12 bulbs of the same wattage, each having separate...

    Text Solution

    |

  8. How many different signals cab be given using any number of flags from...

    Text Solution

    |

  9. It is required to seat 5 men and 4 women in a row so that the women ...

    Text Solution

    |

  10. If P(n ,4)=20xxP(n ,2), then find n

    Text Solution

    |

  11. If P(n ,4)=20xxP(n ,2)find n

    Text Solution

    |

  12. If P(n ,4)=20xxP(n ,2)find n.

    Text Solution

    |

  13. If P(n ,4)=20xxP(n ,2),find n.

    Text Solution

    |

  14. In how many ways can 6 persons stand in a queue?

    Text Solution

    |

  15. Seven athletes are participating in a race. In how many ways can the ...

    Text Solution

    |

  16. If 22P(r+1):^(20)P(r+2)=11 : 52 ,find r

    Text Solution

    |

  17. If (2n+1)P(n-1):^(2n-1)P(n)=3:5,find n.

    Text Solution

    |

  18. Find the number of arrangements of the letters of the INDEPENDENCE....

    Text Solution

    |

  19. In how many ways can the letters of the word PENCIL be arranged so tha...

    Text Solution

    |

  20. How many 4-letter word, with or without meaning, can be formed out of ...

    Text Solution

    |