Home
Class 12
MATHS
If X""=""{4^n-3n-1"":""n in N}""a n d""...

If `X""=""{4^n-3n-1"":""n in N}""a n d""Y""=""{9(n-1)"": n in N}` , where N is the set of natural numbers, then `XuuY` is equal to (1) N (2) Y - X (3) X (4) Y

A

`X`

B

`Y`

C

`N`

D

`Y-X`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • EQUATIONS

    RESONANCE|Exercise EXERCISE-2 (PART-II: PREVIOUSLY ASKED QUESTION OF RMO) |7 Videos

  • GEOMETRY

    RESONANCE|Exercise Exercise-1 (Part-I: Previous Asked Question For Pre RMO)|50 Videos

Similar Questions

Explore conceptually related problems

If X={4^(n)-3n-1:n in N} and Y={9(n-1):n in N} ,where N is the set of natural numbers,then X uu Y is equal to (1)N(2)Y-X(3)X(4)Y

If X={4^(n)-3n-1 : n in N} and Y={9(n-1) : n in N} , then

If X = {4 ^(n)-2n-1: n in N} and Y={9(n -1) : n in N}, then Xnn Y=

If X={4^(n)-3n-1n in N} and Y={9(n-1):n in N} , then X uu Y is equal to

If X={4^(n)-3n-1:n in N} and {9(n-1):n in N} , the prove that X sub Y .

If X={8^(n)-7n-1,n in N} and Y={49(n-1);n in N}, then prove that X is a subset of Y

If X={8^(n)-7n-1:n in N) and Y={49(n-1): n in N}, then

If X={8^n-7n-1:n epsilon N} and Y={49(n-1):n epsilon N} , then

RESONANCE-FUNDAMENTAL OF MATHEMATICS-Exercise
  1. If A = sin^2x + cos^4 x, then for all real x :

    Text Solution

    |

  2. Let X""=""{1,""2,""3,""4,""5} . The number of different ordered pairs ...

    Text Solution

    |

  3. In a DeltaPQR. if 3 sinP +4 cosQ=6 and 4sinQ+3cosP=1, then the angle R...

    Text Solution

    |

  4. If A and B two sets containing 2 elements and 4 elements, respectively...

    Text Solution

    |

  5. The expression (tanA)/(1-cotA)+(cotA)/(1-tanA) can be written as :

    Text Solution

    |

  6. If X""=""{4^n-3n-1"":""n in N}""a n d""Y""=""{9(n-1)"": n in N} , wh...

    Text Solution

    |

  7. Let fK(x)""=1/k(s in^k x+cos^k x) where x in R and kgeq1 . Then f4(x)...

    Text Solution

    |

  8. Let A and B be too sets containing four and two elements respectively ...

    Text Solution

    |

  9. If the angles of elevation of the top of tower from three collinear po...

    Text Solution

    |

  10. If 0 <= x < 2pi, then the number of real values of x, which satisfy th...

    Text Solution

    |

  11. If 5(tan^2x - cos^2x)=2cos 2x + 9, then the value of cos4x is

    Text Solution

    |

  12. Let a vertical tower AB have its end A on the level ground. Let C be t...

    Text Solution

    |

  13. Let S={x in R: x ge 0 and 2|(sqrt(x)-3|+sqrt(x)(sqrt(x)-6)+6=0} then S...

    Text Solution

    |

  14. If the sum of all the solutions of the equation 8 cosx.(cos(pi/6+x)cos...

    Text Solution

    |

  15. PQR is a triangular park with PQ=PR=200m. A.T.V. tower stands at the m...

    Text Solution

    |

  16. Let S={x in R: x ge 0 and 2|(sqrt(x)-3|+sqrt(x)(sqrt(x)-6)+6=0} then S...

    Text Solution

    |

  17. In a class 140 students numbered 1 to 140, all even numbered students ...

    Text Solution

    |

  18. The sum of all values of theta in (0,pi/2) satisfying sin^(2)2theta+co...

    Text Solution

    |

  19. The value of cospi/2^(2).cospi/2^(3)……….cospi/2^(10).sinpi/2^(10) is

    Text Solution

    |

  20. If sin^4 alpha + 4 cos^4 beta + 2 = 4sqrt2 sin alpha cos beta ; alpha,...

    Text Solution

    |