Home
Class 11
MATHS
There are 21 points on circle . The numb...

There are 21 points on circle . The number of chord by joining there points are ............. .

Text Solution

Verified by Experts

The correct Answer is:
210
Promotional Banner

Topper's Solved these Questions

  • OBJECTIVE SECTION AS PER NEW PAPER SCHEME

    KUMAR PRAKASHAN|Exercise Permutations and Combinations (True /False Statement)|20 Videos

  • OBJECTIVE SECTION AS PER NEW PAPER SCHEME

    KUMAR PRAKASHAN|Exercise Binomial Theorem (Fill in the blanks )|16 Videos

  • OBJECTIVE SECTION AS PER NEW PAPER SCHEME

    KUMAR PRAKASHAN|Exercise Linear in Equalities (True/False Statement)|14 Videos

  • MATHEMATICAL REASONING

    KUMAR PRAKASHAN|Exercise QUESTION OF MODULE (Knowledge Test:)|2 Videos

  • PERMUTATIONS AND COMBINATIONS

    KUMAR PRAKASHAN|Exercise PRACTICE WORK |40 Videos

Similar Questions

Explore conceptually related problems

There are 10 points in a plane, out of these 6 are collinear. The number of triangles formed by joining these points, is

There are 12 points in a plane of which 5 points are collinear, then the number of lines obtained by joining these points in pair is ""^12C_2-""^5C_2+1,

Out of 18 points in a plane, no three are in the same line except five points which are collinear. Find the number of lines that can be formed joining the point.

There are 10 points in a plane of which no three points are collinear and four points are concyclic. The number of different circles that can be drawn through at least three points of these points is

bar(AB) is diameter of circle with centre (4,2) . If point A is (-3,2) . Then second end point is ..............

The longest chord of a circle is a ......... of the circle.

There are 12 points in a plane in which 6 are collinear. Number of different straight lines that can be drawn by joining them, is

There are 2n points in a plane in which m are collinear. Number of quadrilateral formed by joining these lines

A chord of a circle is equal to the radius of the circle. Find the angle subtended by the chord at a point on the minor arc and also at a point on the major arc.

KUMAR PRAKASHAN-OBJECTIVE SECTION AS PER NEW PAPER SCHEME -Permutations and Combinations (Fill in the blanks )
  1. If (n +1 ) ! = 12 (n-1) ! then n = ........... n in N

    Text Solution

    |

  2. If nP4 : nP5 = 1 : 2 then n = ............ .

    Text Solution

    |

  3. If the repetation is not allowed then we get .......... total numbers ...

    Text Solution

    |

  4. .........are the 9 digit numbers formed from the number with all digit...

    Text Solution

    |

  5. ............are the total numbers words formed by the letters of the w...

    Text Solution

    |

  6. In an examination, there are three multiple choice questions and each ...

    Text Solution

    |

  7. n((n-1)P((r-1)))=................ .

    Text Solution

    |

  8. ...........are the total numbers of ways to make a password of 5 digit...

    Text Solution

    |

  9. ...........are the numbers of 7 digit formed by digits 3,4,5,4,5,5 and...

    Text Solution

    |

  10. ""(n)Pr+((n),(r))=.........

    Text Solution

    |

  11. If ((n),(12))=((n),(8)) then n = ........ .

    Text Solution

    |

  12. If ""^(n)C(9)=""^(n)C(8), find ""^(n)C(17).

    Text Solution

    |

  13. If ((20) ,(r))=((20),(r+2)) then ((r),(2))=........ .

    Text Solution

    |

  14. Number of diagonal of the polygon having 10 sides = ............

    Text Solution

    |

  15. The numbers of rectangle formed by m horizontal and n vertical line ar...

    Text Solution

    |

  16. If ((79),(r)) is maximum then r = .......... .

    Text Solution

    |

  17. There are 21 points on circle . The number of chord by joining there p...

    Text Solution

    |

  18. If ((2n),(3)) = 11 ((n),(3)) then n = .....

    Text Solution

    |

  19. If ((2n),(3))div((n),(2))=12 then n = .......

    Text Solution

    |

  20. A person has one currency not each of Rs 500, Rs 100, Rs 50 , Rs 20 a...

    Text Solution

    |