Home
Class 12
MATHS
Let * be a binary operation of N given b...

Let * be a binary operation of `N` given by `a`*`b=L C M\ (a , b)` for all `a , b in N`. Find `5`*`7.`

Promotional Banner

Topper's Solved these Questions

  • EXAM REVISION SERIES

    XII BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise All Questions|19 Videos

Similar Questions

Explore conceptually related problems

Let * be a binary operation of N given by a a*b=L C M\ (a , b) for all a , b in Ndot Find 5*7.

Let '*' be a binary operation on N given by a*b=LdotCdotM(a , b) for all a , b in Ndot Find 5*7,20*16

Let * be a binary operation on N given by a*b= LdotCdotM(a ,\ b) for all a ,\ b in N . (i) Find 5*7, 20*16 (ii) Is * commutative?

Let '*' be a binary operation on N given by a*b=LdotCdotMdot(a , b) for all a , b in Ndot Find 5*7,20*16 (ii) Is * commutative? Is * associative? Find the identity element in N Which element of N are invertible? Find them.

Let * be a binary operation on N defined by a*b=LCM(a ,\ b) for all a ,\ b in Ndot Find 2*4,\ 3*5,\ 1*6 .

Let * be a binary operation on N given by a*b=2a+3b for all a ,\ b in N , then find: 5*4,\ 1*4 ,

Let * be a binary operation on N given by a * b=H C F\ (a ,\ b),\ \ a ,\ b in N . Write the value of 22 * 4 .

Let * be a binary operation o Q defined by a*b= (ab)/4 for all a,b in Q ,find identity element in Q

Let * be a binary operation defined by a * b=3a+4b-2 . Find 4*5.

Let* be a binary operation on N given by a*b = HCF (a ,\ b)\ a ,\ b\ \ Ndot Write the value of 22*4.

XII BOARD PREVIOUS YEAR PAPER ENGLISH-BOARD PAPER SOLUTIONS-All Questions
  1. Solve the following differential equation: 2x^2(dy)/(dx)-\ 2x y+y^2=0

    Text Solution

    |

  2. Find the particular solution of the following differential equation...

    Text Solution

    |

  3. Let * be a binary operation of N given by a*b=L C M\ (a , b) for all ...

    Text Solution

    |

  4. Evaluate: int(2x)/((x^2+1)(x^2+3))\ dx

    Text Solution

    |

  5. Evaluate: int(5x+3)/(sqrt(x^2+4x+10))\ dx

    Text Solution

    |

  6. Find the Vector and Cartesian equations of the line passing through...

    Text Solution

    |

  7. Evaluate : int((x-4)e^x)/((x-2)^3)\ dx

    Text Solution

    |

  8. Show that y=log(1+x)-(2x)/(2+x), x gt 1 is an increasing function of x...

    Text Solution

    |

  9. Find the equation of the normal at the point (a m^2, a m^3) for the ...

    Text Solution

    |

  10. Evaluate : int(e^x)/(sqrt(5-4e^x-\ e^(2x)))\ dx

    Text Solution

    |

  11. Find the relationship between a and b so that the function f defined...

    Text Solution

    |

  12. If x^y=e^(x-y), show that (dy)/(dx)=(logx)/({log(x e)}^2)

    Text Solution

    |

  13. Obtain the inverse of the following matrix, using elementary operation...

    Text Solution

    |

  14. Using matrices, solve the following system of equations: x+y+z=6; x...

    Text Solution

    |

  15. Find the value of p , if (2 hat i+6 hat j+27 hat k) x ( hat i+3 hat j+...

    Text Solution

    |

  16. Write the direction cosines of a line equally inclined to be three ...

    Text Solution

    |

  17. Let* be a binary operation on N given by a*b = HCF(a ,\ b)\ a ,\ b\...

    Text Solution

    |

  18. Find the value of x, If [[3x+y,-y],[2y-x,3]]=[[1,2],[-5,3]]

    Text Solution

    |

  19. Write the value of the following determinant |(a-b,b-c,c-a),(b-c,c-a,a...

    Text Solution

    |

  20. Find the value of x, from the following: |(x,4),(2,2x)|=0

    Text Solution

    |