Home
Class 12
MATHS
If t(n) denotes the nth term of the seri...

If `t_(n)` denotes the nth term of the series `:`
`2+3+6+11+18+"………."` , then `t_(50)` is `:`

A

`49^(2)-1`

B

`49^(2)`

C

`50^(2)+1`

D

`49^(2)+2`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    HIMALAYA PUBLICATION|Exercise QUESTION BANK|213 Videos
  • QUADRATIC EQUATIONS AND EXPRESSION

    HIMALAYA PUBLICATION|Exercise Question Bank|129 Videos

Similar Questions

Explore conceptually related problems

Find the nth term of the series 2+5+12+31+86+"..." .

The sum to n terms of the series 11 + 103 + 1005 + …. Is

Find the nth term of the series 1+5+18+58+179+"..." .

Find the sum to n terms of the series 5+ 11 + 19 + 29+ 41+ ……

Find the nth term of the series =1+4+10+20+35+".." .

Find the nth term of the series 1+2+5+12+25+46+"...." .

Sum to n terms of the series 2+6+12+20+.. is,

Find the sum to n terms of the series , 5+11+19+29+41…

If the nth term of the sequence is a_ n =4n -3 then find 17th term

HIMALAYA PUBLICATION-PROGRESSIONS-QUESTION BANK
  1. The third of G.P. is 4. The product of its first 5 terms is :

    Text Solution

    |

  2. If the sum of n terms of an A.P. is given by : S(n) = 3n+ 2n^(2), th...

    Text Solution

    |

  3. If t(n) denotes the nth term of the series : 2+3+6+11+18+"………." , th...

    Text Solution

    |

  4. The A.M and G.M of two numbers are in the ratio 3: 2, then the ratio o...

    Text Solution

    |

  5. If 12 and 9 are respectively A.M and G.M of two numbers, then the numb...

    Text Solution

    |

  6. If one geometric mean G and two arithmetic means A(1) and A(2) are ins...

    Text Solution

    |

  7. If (1)/(2) is the sum to infinity of a G.P, with common ratio (1)/(3),...

    Text Solution

    |

  8. If S is the sum to infinity of a G.P, whose first element is a, then t...

    Text Solution

    |

  9. If 2 is the sum to infinity of a G.P, whose first element is 1, then t...

    Text Solution

    |

  10. The fourth seventh and tenth terms of a G.P. are p,q,r respectively, t...

    Text Solution

    |

  11. The second, third and sixth terms of an A.P are consecutive elements o...

    Text Solution

    |

  12. If x, 2 x+2,3 x+3 are in G.P, then 5^(th) element is

    Text Solution

    |

  13. Three positive numbers froman increasing G.P. If middle term in this G...

    Text Solution

    |

  14. Let ( a(n) ) be a G.P. such that ( a(4))/( a(6)) =( 1)/( 4) and a(2) +...

    Text Solution

    |

  15. The fourth element of a G.P is 8. The product of first seven elements ...

    Text Solution

    |

  16. If a(1), a(2) ,a(3)"….." is an A.P. such that : a(1) + a(5) + a(10)+...

    Text Solution

    |

  17. 7th term of an A.P. is 40. then the sum of the first 13 terms is

    Text Solution

    |

  18. In an A.P, 7^(th) element is (1)/(21) and 21^(st ) element is (1)/(7) ...

    Text Solution

    |

  19. If a, b, c are in A . P, then (a-c)^(2)=

    Text Solution

    |

  20. Let a and d are respectively first and the common difference of an A.P...

    Text Solution

    |