Home
Class 11
MATHS
If second term of a GP. is 2 and the sum...

If second term of a GP. is 2 and the sum of its infinte terms is 8, then its first term is

A

4

B

-4

C

2

D

-2

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • MODEL PAPER (6)

    JBD PUBLICATION|Exercise EXERCISE|43 Videos

  • MODEL PAPER (8)

    JBD PUBLICATION|Exercise EXERICSE|41 Videos

Similar Questions

Explore conceptually related problems

The sum of first three terms of a G.P. is 16 and the sum of the next three terms is 128. Determine the first term, the common ratio and the sum to n terms of the G.P.

The sum of first ten terms of an A.P. is 155 and the sum of first two terms of a G.P. is 9. The first term of the A.P. is equal to the common ratio of the G.P., and the first term of the G.P. is equal to the common difference of the A.P. Find the two progressions.

The nth term of a G.P. is 128 and the sum of its n terms is 225. If its common ratio is 2, then its first term is:

The sum of the first four terms of an A.P. is 56. The sum of the last four terms is 112. If its first term is 11, then find the number of terms.

If the 12th term of an A.P. is -13 and the sum of the first four terms is 24, what is the sum of the first 10 terms ?

5th term of a G.P. is 2, then the product of first 9 terms is:

If the first term of an A.P. is 2 and the sum of the first five terms is equal to one-fourth of the sum of the next five terms, find the 20th term.

The sum of first three terms of a G.P. is 7 and the sum of their squares is 21. Determine the first five terms of the G.P.

If the sum of first 10 terms of an A.P. is 4 times the sum of its first 5 terms, then find the ratio of first term and common difference.

JBD PUBLICATION-MODEL PAPER (7)-EXERCISE
  1. The conjugate of 1/(2+i) is

    Text Solution

    |

  2. The number of straight lines that can be formed by joining 20 points o...

    Text Solution

    |

  3. If second term of a GP. is 2 and the sum of its infinte terms is 8, th...

    Text Solution

    |

  4. The point on the axis of y which its equidistant from (-1, 2) and (3, ...

    Text Solution

    |

  5. The equation of the parabola with focus at (0, 3) and the directrix y ...

    Text Solution

    |

  6. underset(xrarr5)lim (|x-3|)/(x-3) is equal to:

    Text Solution

    |

  7. If A and B are events such that P(A) = 0.42, P(B) = 0.48 and P(A cap B...

    Text Solution

    |

  8. The minute hand of a watch is 1.5 cm long. How many cm does its extrem...

    Text Solution

    |

  9. Prove that: 2 sin^2(3pi)/4+2cos^2pi/4+2s e c^2pi/3=10

    Text Solution

    |

  10. If a + ib = ((x+i)^2)/(2x^2+1), prove that a^2+b^2 =((x^2+1)^2)/((2x^2...

    Text Solution

    |

  11. Using Binomial theorem, prove that 6^(n)-5n always leaves remainder 1...

    Text Solution

    |

  12. Write the middle term of (x-1/x)^(2n).

    Text Solution

    |

  13. Find the equation of the set of points P, the sum of whose distance fr...

    Text Solution

    |

  14. Find out which of the following sentences are statements and which are...

    Text Solution

    |

  15. Find out which of the following sentences are statements and which are...

    Text Solution

    |

  16. Write each of the statement in the form if p and then q p: It is nec...

    Text Solution

    |

  17. Write each of the following statements in the form "if p then q" q: Th...

    Text Solution

    |

  18. Taking the set of natural numbers as the universal set, write down the...

    Text Solution

    |

  19. Find the domain of the function f(x)= (x^2+2x+1)/(x^2-8x+12).

    Text Solution

    |

  20. If cosx=-1/3, x lies in IIIrd quadrant, find the value of sinx/2, cosx...

    Text Solution

    |