Home
Class 7
MATHS
If 2^(2n-1)=1/(8^(n-3)), then the value ...

If `2^(2n-1)=1/(8^(n-3)),` then the value of `n` is `-2` b. `2` c. `0` d. `3`

A

3

B

2

C

0

D

`-2`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • EXPONENTS AND POWERS

    MTG IIT JEE FOUNDATION|Exercise EXERCISE (MULTIPLE CHOICE QUESTION) (LEVEL -II)|15 Videos

  • EXPONENTS AND POWERS

    MTG IIT JEE FOUNDATION|Exercise EXERCISE (MATCHING)|2 Videos

  • EXPONENTS AND POWERS

    MTG IIT JEE FOUNDATION|Exercise NCERT SECTION (EXERCISE 12.3)|21 Videos

  • DATA HANDLING

    MTG IIT JEE FOUNDATION|Exercise Olympiad / Hots Corner |20 Videos

  • FRACTIONS AND DECIMALS

    MTG IIT JEE FOUNDATION|Exercise Olympiad/HOTS Corner|13 Videos

Similar Questions

Explore conceptually related problems

If 2^(2n-1)=(1)/(8^(n-3)), then the value of n is a -2 b.2 c.0 d.3

If a_1=1\ a n d\ a_(n+1)=(4+3a_n)/(3+2a_n),\ ngeq1\ a n d\ if\ (lim)_(n->oo)a_n=n then the value of a_n is sqrt(2) b. -sqrt(2) c. 2\ d. none of these

If 2^(n+4)-2^(n+2)=3, then n is equal to a.0 b.2c.-2d.-1

If I_n=int_0^(sqrt(3))(dx)/(1+x^n),(n=1,2,3. .), then find the value of ("lim")_(nvecoo)I_ndot (a)0 (b) 1 (c) 2 (d) 1/2

If roots of an equation x^(n)-1=0 are e1,a_(1),a_(2),.....a_(n-1), then the value of (1-a_(1))(1-a_(2))(1-a_(3))(1-a_(n-1)) will be n b.n^(2) c.n^(n) d.0

Let (:a_(n):) be a sequence given by a_(n+1)=3a_(n)-2*a_(n-1) and a_(0)=2,a_(1)=3 then the value of sum_(n=1)^(oo)(1)/(a_(n)-1) equals (A) 1 (B) (1)/(2) (C) 2 D) 4

If ^(n+1)C_(3)=2.quad ^(n)C_(2) then =3 b.4c.6d.5

MTG IIT JEE FOUNDATION-EXPONENTS AND POWERS-EXERCISE (MULTIPLE CHOICE QUESTION) (LEVEL -I)
  1. If 5^a=3125 , then thevalue of 5^((a-3)) is 25 b. 125 c. 625 d. 1625

    Text Solution

    |

  2. If ((1)/((-7)^3)÷(1)/(7^8))div x=1, then the value of x is

    Text Solution

    |

  3. If 2^(2n-1)=1/(8^(n-3)), then the value of n is -2 b. 2 c. 0 d. 3

    Text Solution

    |

  4. (4^(5)xx3^5)/((12)^(5) xx9^2)=?

    Text Solution

    |

  5. Assuming that x is a positive real number and a ,\ b ,\ c are rational...

    Text Solution

    |

  6. Differentiate ((x^(a))/(x^(b)))^(a+b)*((x^(b))/(x^(c)))^(b+c)*((x^(c))...

    Text Solution

    |

  7. The value of (8^(-25)-8^(-26)) is 7xx8^(-25) b. 7xx8^(-26) c. 8xx8^(-...

    Text Solution

    |

  8. 49xx49xx49xx49=7^? 4 b. 7 c. 8 d. 16

    Text Solution

    |

  9. Number of prime factors is (6^(12)xx(35)^(28)xx(15)^(16))/((14)^(14)xx...

    Text Solution

    |

  10. If 5^((x+3))=25^((3x-4)), then the value of x is 5/(11) b. (11)/5 c. (...

    Text Solution

    |

  11. If 2^(n-1)+2^(n+1)=3, then n is equal to 0 b. 2 c. -2 d. -1

    Text Solution

    |

  12. If 3^(x)-3^(x-1)=18, then the value of x^x is

    Text Solution

    |

  13. By what number should ((2)/(3))^3 be divided so that the quotient is (...

    Text Solution

    |

  14. By what number should ((3)/(5))^2 be multiplied so that the product i...

    Text Solution

    |

  15. Find the value of x so that 5^(2x)xx5^(3)=5^6.

    Text Solution

    |

  16. Find the value of x, if (2^(x-1)*4^(2x+1))/(8^(x-1))=64.

    Text Solution

    |

  17. If 800xx(x^3)^(2)=8xx10^8, then x=

    Text Solution

    |

  18. Express 32xx10000000 in standard form.

    Text Solution

    |

  19. Usual form of -4.8xx10^8 is

    Text Solution

    |

  20. Simplify : 7^(16)xx7^(5)xx((1)/(7))^(11)

    Text Solution

    |