Home
Class 7
MATHS
If A={x/x +10 = 10 } then n(A)=....

If A={x/x +10 = 10 } then n(A)=_____.

A

0

B

1

C

4

D

2

Text Solution

Verified by Experts

The correct Answer is:
b
Promotional Banner

Topper's Solved these Questions

  • EQUATIONS AND THEIR APPLICATIONS

    PEARSON IIT JEE FOUNDATION|Exercise Very short answer type question|28 Videos

  • EQUATIONS AND THEIR APPLICATIONS

    PEARSON IIT JEE FOUNDATION|Exercise Short Answer type questions|22 Videos

  • EXPRESSIONS AND SPECIAL PRODUCTS

    PEARSON IIT JEE FOUNDATION|Exercise CONCEPT APPLICATION (LEVEL 3) |25 Videos

Similar Questions

Explore conceptually related problems

If n(A)=10,n(B)=15 and n(A uu B)=x

If U={x:x<=10,x in N} is the Universal set, A={x:x in N,x is prime number } and B={x:x in N, x is even} write A n B in roster form.

If the largest interval to which x belongs so that the greatest therm in (1+x)^(2n) has the greatest coefficient is (10/11, 11/10) then n= (A) 9 (B) 10 (C) 11 (D) none of these

For X ~ B (n,p), n = 10, E (X) = 5, then Var (X) =

In the expansion of (x^(3)-(1)/(x^(2)))^(n),n in N if sum of the coefficients of x^(5) and x^(10) is 0 then n is

If y =10^(x^(x) ) +x^(x^(10)) +x^(10^(x) ) ,then (dy)/(dx)

If A = {x||x in N,x is a prime number less than 12} and B = {x|| x in N , x is a foctor of 10} then A nn B = ….

For X ~ B (n,p), n = 10, E (X) = 5, then p =

We define a function f on the integers f(x) = x//10 , if x is divisible by 10, f(x) = x + 1 , if x is not divisible by 10. If A_(0) = 1994 and A_(n+1) = f(A_(n)) . What is the smallest n such that A_(n) = 2 ?

PEARSON IIT JEE FOUNDATION-EQUATIONS AND THEIR APPLICATIONS-Level 3
  1. If A={x/x +10 = 10 } then n(A)=.

    Text Solution

    |

  2. The present age of a man is seven times the present age of his son. Tw...

    Text Solution

    |

  3. Th present age of A is thrice that of B. Five years from now, A's age ...

    Text Solution

    |

  4. The sum of the present ages of Ram and Shyam is 75 years. Ten years ag...

    Text Solution

    |

  5. A road divider of certain length is painted one-sixth yellow, three-fi...

    Text Solution

    |

  6. Mr Sumanth spends two-fifth of his salary on house rent and one-fouth ...

    Text Solution

    |

  7. In a two-digit number, the units digit is 3 more than the ten's digit....

    Text Solution

    |

  8. A number is added to two-third of itself, 1 is subtracted from the sum...

    Text Solution

    |

  9. The present age of A is 4 years less than twice the present age of B. ...

    Text Solution

    |

  10. A mother said that, her age is one year less than thrice her dauther's...

    Text Solution

    |

  11. There are two numbers, the difference between them is equal to twice t...

    Text Solution

    |

  12. A student painted a circular region of certain area such that 4//7th o...

    Text Solution

    |

  13. In a two-digit number, tens digit is a multiple of the units digit. Th...

    Text Solution

    |

  14. There are three house-hold articles. The cost of the first article is ...

    Text Solution

    |

  15. In an isoceles triangle, the difference between one of the equal sides...

    Text Solution

    |

  16. Mr Anthony travelled 4//9 of a cetain distance by bus, 1//3 by car, an...

    Text Solution

    |

  17. Which of the following is a solution of (2x -5)/(3) gt (3x + 3)/(4) ?

    Text Solution

    |

  18. The unit digit of a two-digit number is 6. If 9 is added to the number...

    Text Solution

    |

  19. A purse contains a cetain number of coins fo denominations Re. 1 and 5...

    Text Solution

    |

  20. Rs x is divided among A, B and C. The share of A is two-fifth of the t...

    Text Solution

    |

  21. Ten years ago, Mohan's age was 35 years less than twice his present ag...

    Text Solution

    |