Home
Class 12
MATHS
Suppose a box contains a set of n balls ...

Suppose a box contains a set of n balls `(n gt 4)`(denoted by B )of four different colours (many have different sizes), viz,red, blue, green and yellow. Show that a relation R defined on B as `R={(b_1,b_2) : "balls" b_1 "and" b_2` have the same colour} is an equivalence relation on B. How many equivalence classes can you find with respect ot R ?

Promotional Banner

Topper's Solved these Questions

  • TEST PAPER 3

    MODERN PUBLICATION|Exercise PROBLEM|63 Videos
  • TEST PAPER 5

    MODERN PUBLICATION|Exercise PROBLEM|41 Videos

Similar Questions

Explore conceptually related problems

Show that the relation R is in the set A={1,2,3,4,5} given by R={(a, b): |a-b| is divisible by 2}, is an equivalence relation. Write all the equivalence classes of R.

Prove that the relation R on the set Z of all integers defined by R={(a, b):a-b is divisible by n} is an equivalence relation.

If Z is the set of all integers and R is the relation on Z defined as R={(a, b): a, b in Z and a-b is divisible by 3. Prove that R is an equivalence relation.

If f:X to Y is a function. Define a relation R on X given by R={(a, b): f(a)=f(b)}. Show that R is an equivalence relation on X.

Show that the relation R on the set Z of integers given by R = {(a,b): 2 divides (a - b)} is an equivalence relation.

Let R be the relation on Z defined by aRb iff a-b is an even integer. Show that R is an equivalence relation.

Let A={1,2,3,...,9) and R be the relation on A xx A defined by (a, b) R (c,d), if a+d=b+c for (a, b), (c,d) in A xx A. Prove that R is an equivalence relation and also obtain the equivalence class (2,5).

If N denotes the set of all natural numbers and R be the relation on N xx N defined by (a, b) R (c, d) if ad(b+ c)=bc(a+d) . Show that R is an equivalence relation.

MODERN PUBLICATION-TEST PAPER 4-PROBLEM
  1. Write the equation of the plane perpendicular to z-axis and passing th...

    Text Solution

    |

  2. Constract the composition table/multiplication table for the binary op...

    Text Solution

    |

  3. Suppose a box contains a set of n balls (n gt 4)(denoted by B )of four...

    Text Solution

    |

  4. Let A and B be sets. Show that f : A xx B rarr B xx A such that f (...

    Text Solution

    |

  5. (Allocation Problem.)A farmer has 5 acres of land on which he wishes t...

    Text Solution

    |

  6. Without expanding prove that |[1,a,a^(2),-bc],[1,b,b^(2),-ca],[1,c,c^(...

    Text Solution

    |

  7. Prove that abs((a,b,c),(a^2,b^2,c^2),(bc,ca,ab))=(a-b)(b-c)(c-a)(ab+bc...

    Text Solution

    |

  8. If A=[[1,2,3],[3,-2,1],[4,2,1]]"show that"A^3-23A-40I=0

    Text Solution

    |

  9. If A =[[1,-2,2],[3,1,-1]] B[[2,4],[1,2],[3,-1]] "verify" "that" (AB)^...

    Text Solution

    |

  10. If f(x)={(ax^2+b if x lt1),(1 if x=1),(2ax-b if xgt1):} is continuous...

    Text Solution

    |

  11. Show that 2 sin x + than x ge 3x all x in (0, pi/20).

    Text Solution

    |

  12. Prove that the curves x = y^(2) and xy = k cut at right angles, if 8k^...

    Text Solution

    |

  13. Evaluate the following integrals int(dx)/(sinx(3+2cosx) put cosx=z

    Text Solution

    |

  14. int0^(pi//2)(sqrttanx+sqrtcotx)dx

    Text Solution

    |

  15. Determine the area of the region bounded by y^2=x^3 and the double ord...

    Text Solution

    |

  16. Vectors vec(a), vec(b) and vec(c) are such that vec(a) + vec(b) + vec(...

    Text Solution

    |

  17. If l(1), m(1), n(1) and l(2), m(2), n(2)  are the direction cosines of...

    Text Solution

    |

  18. Find the equation of the plane Which contains the line of intersection...

    Text Solution

    |

  19. Find the distance of the point (-1,-5,-10) from the point of intersect...

    Text Solution

    |

  20. Let R be the relation on the set R of real numbers such that aRb iff a...

    Text Solution

    |