Home
Class 12
MATHS
Four numbers are in arithmetic progressi...

Four numbers are in arithmetic progression.The sum of first and last terms is `8` and the product of both middle terms is `15.` The least number of the series is.

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
1
Promotional Banner

Topper's Solved these Questions

  • SEQUENCES AND SERIES

    AAKASH INSTITUTE|Exercise Assignment (SECTION - B) One option is correct|50 Videos
  • SEQUENCES AND SERIES

    AAKASH INSTITUTE|Exercise Assignment (SECTION - C) More than one option are correct|11 Videos
  • SEQUENCES AND SERIES

    AAKASH INSTITUTE|Exercise Try Yourself|85 Videos
  • RELATIONS AND FUNCTIONS

    AAKASH INSTITUTE|Exercise Assignment (Section - J) Aakash Challengers Questions|8 Videos
  • SETS

    AAKASH INSTITUTE|Exercise SECTION-I(Aakash Challengers Questions)|5 Videos

Similar Questions

Explore conceptually related problems

In an Arithmetic progression the sum of first four terms is 20 and the sum of first three terms is 12 then find the fourth term of the arithmetic

In an increasing geometric progression, the sum of the first and the last term is 99, the product of the second and the last but one term is 288 and the sum of all the terms is 189. Then, the number of terms in the progression is equal to

The sum of four consecutive numbers in A.P.is 32 and the ratio of the product of the first and last term to the product of two middle terms is 7:15. Find the number

If sum of four numbers in A.P. is 28 and product of two middle terms is 45, then product of the first and last terms is

The sum of four consecutive numbers in an A.P. is 52 and the ratio of the product of the first and the last term to the product of two middle terms is 11:20. Find the numbers.

The first term of an A.P. is 5 and the last term is 45. If the sum of all the terms in 400. the number of terms is

First term of an A,P is -5 and its last term is 45 If the sum of these terms is 120 find the number of terms.

The sum of the first and fifth terms of an AP is 26 and the product of the second and fourth is 160. Then the sum of the first six terms of the progression is

The sum of four numbers in arithmetical progression is 48 and the product of the extremes to the product of the means as 27 to 35 Find the numbers

AAKASH INSTITUTE-SEQUENCES AND SERIES -Assignment (SECTION - A) One option is correct
  1. There are n A.M.s between 3 and 17. The ratio of the last mean to the ...

    Text Solution

    |

  2. n A.M.\'s are inserted between 1 and 31 such that the ratio of the 7th...

    Text Solution

    |

  3. Four numbers are in arithmetic progression.The sum of first and last t...

    Text Solution

    |

  4. If the sum of three numbers which are in A.P is 27 and the product of ...

    Text Solution

    |

  5. If n arithmetic means are inserted between 2 and 38, then the sum of t...

    Text Solution

    |

  6. If S(n) denote the sum to n terms of an A.P. whose first term is a ...

    Text Solution

    |

  7. If three positive numbers a, b, c are in A.P. and 1/a^2,1/b^2,1/c^2 a...

    Text Solution

    |

  8. The sum of the series a-(a+d)+(a+2d)-(a+3d)+ up to (2n+1) terms is -n ...

    Text Solution

    |

  9. Let Sn denotes the sum of the first of n terms of A.P. and S(2n)=3Sn ...

    Text Solution

    |

  10. Let S(n) denotes the sum to terms of an A.P. whose first term is a . I...

    Text Solution

    |

  11. If the first second and last term of an A.P. are a ,\ b ,\ a n d\ 2a\ ...

    Text Solution

    |

  12. Sum of first n terms of an A.P. whose last term is l and common dif...

    Text Solution

    |

  13. If one geometric mean G and two arithmetic means A(1)andA(2) are inser...

    Text Solution

    |

  14. The fourth term of the G.P. 4, - 2 , 1 , … is

    Text Solution

    |

  15. Find: n th term of the G.P. sqrt(3),1/(sqrt(3)),1/(3sqrt(3)),

    Text Solution

    |

  16. Which term of the progression 18 ,-12 ,8, i s(512)/(729)?

    Text Solution

    |

  17. The third term of a G.P. is 3. Find the product of its first five term...

    Text Solution

    |

  18. "If " (a^(n)+b^(n))/(a^(n-1)+b^(n-1))" is the A.M. between" a and b, t...

    Text Solution

    |

  19. If (2p)th term of a G.P is q^2 and (2q)th term is p^2 then (p+q)th ter...

    Text Solution

    |

  20. Three number whose product it 512 are in G.P. If 8 is added to the f...

    Text Solution

    |