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How many chords can be drawn through 21 ...

How many chords can be drawn through 21 points on a circle?

Text Solution

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The correct Answer is:
`""^(21)C_(2)=210`
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How many chords can be drawn through 20 points on a circle?

(i) A kabaddi coach has 14 players ready to play. How many different teams of 7 players could the coach put on the court? (ii) There are 15 persons in a party and if , each 2 of them shakes hands wit each with each other. How many handshakes happen in the party? (iii) How many chords can be drawn through 20 points on a circle? (iv) In a parking lot one hunderd, one year old cars are parked. Out of them five are to be chosen at random for to check its pollution devices. How many different set of five cars are possible? (v) How many ways can a team of 3 boys, 2 girls and 1 transgender be selected from 5 boys, 4 girls and 2 transgender?

Knowledge Check

  • How many lines can be drawn given six points of which 3 are collinear?

    A
    125
    B
    900
    C
    13
    D
    16

  • …………….Number of tangents can be drawn from a point inside the circle.

    A
    0
    B
    1
    C
    2
    D
    Infinite

  • The number of tangents that can be drawn to a circle at a point on the circle is………..

    A
    3
    B
    2
    C
    1
    D
    0

    • Similar Questions

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    How many chords can be drawn through 20 points on a circle ?

    if three points are collinear , how many circles can be drawn through these points? Now, try to draw a circle passing through these three points.

    There are ten points in the plane, no three of which are coolinear. How many different lines can be drawn through these points ?

    A variable chord is drawn through the origin to the circle x^2+y^2-2a x=0 . Find the locus of the center of the circle drawn on this chord as diameter.

    The number of tangents that can be drawn to a circle at a point on the circle is………..

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