Home
Class 11
MATHS
If the sum of first 20 terms of an AP is...

If the sum of first 20 terms of an AP is equal to the sum of first 30 terms, then the sum of first 50 terms is.... a)50 b)20 c)0 d)80

A

50

B

20

C

0

D

80

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER MARCH 19

    MAXIMUM PUBLICATION|Exercise EXAMPLE|44 Videos

  • Relations and Functions

    MAXIMUM PUBLICATION|Exercise EXAMPLE|104 Videos

Similar Questions

Explore conceptually related problems

If the sum of p terms of an AP is the same as the sum of its q terms, show that the sum of its (p+q) terms is zero.

If the 'sum of first m terms of an A . P . be n and the sum of first n terms be m , show that the sum of first m+n terms is -(m+n)

If the sum of 12 th and 22nd terms of an AP is 100 then the sum of the first 33 terms of the AP is

if the sum of 12^th and 22^th terms of an AP is 100. Find the sum of first 33 terms.

If the sum of first 75 terms of an AP is 2625, then the 38th term of the AP is

Suppose that a, ar, ar^2,ar^3,ar^4,ar^5 are the first 6 terms of a G.P Find the ratio of the sum of the first tree terms and the sum of first 6 terms

If the first term of a GP is 729 and 7th term is 64, then the sum of its first seven terms is

The sum of first n terms of an arithmetic sequence is n^2+2n What is the sum of first 20 terms of this sequence?

The first term of a G.P. is 3 and the common ratio is 2. Then the sum of first eight terms of the G.P. is

In an A.P. of which a is the first term if the sum of the first p terms is zero then the sum of the next q terms is

MAXIMUM PUBLICATION-QUESTION PAPER MARCH 20-EXAMPLE
  1. In a survey of 600 students in a school,150 students were found to be ...

    Text Solution

    |

  2. Find the principal and general solutions of cosecx = -2.

    Text Solution

    |

  3. If the sum of first 20 terms of an AP is equal to the sum of first 30 ...

    Text Solution

    |

  4. Find the sum to infinity terms of the GP (-3)/4,3/16,(-3)/64,…..

    Text Solution

    |

  5. Find the sum of n terms of the series 7+77+777+..

    Text Solution

    |

  6. Consider the following figure: Find the distance of PQ.

    Text Solution

    |

  7. Find the derivative of cosx from first principle.

    Text Solution

    |

  8. Derivative of f(x)=1+x+x^2+x^3+…+x^50 at x=1 is a)50 b)1250 c)1275 d)1...

    Text Solution

    |

  9. Find lim(xrarr0) f(x) if it exists, where f(x)={(abs[x]/x,,x,!=,0),(...

    Text Solution

    |

  10. For every positive integer n,prove that 7^n-3^n is divisible by 4 usin...

    Text Solution

    |

  11. Modulus of a complex number Z is 2 and arg(z)=pi/3,write the complex ...

    Text Solution

    |

  12. Solve graphically: 2x+yge4,x+yle3,2x-3yle6 xge0,yge0

    Text Solution

    |

  13. Expand (x+1/x)^6

    Text Solution

    |

  14. Find the middle term in the expansion of (x/3+9y)^10

    Text Solution

    |

  15. Let A(1,2) be a fixed point and 'P' be a variable point in the same pl...

    Text Solution

    |

  16. Consider the following ellipse: Find the equation of the ellipse.

    Text Solution

    |

  17. Write the contrapositive of the given statement. "If a number is div...

    Text Solution

    |

  18. Verify by the method of contradiction p:sqrt5 is irrational.

    Text Solution

    |

  19. If E and F are two events such that P(E)=1/4,P(F)=1/2,P(EandF)=1/8,fin...

    Text Solution

    |

  20. If E and F are two events such that P(E)=1/4,P(F)=1/2,P(EandF)=1/8,fin...

    Text Solution

    |