Home
Class 12
MATHS
A student read common difference of an A...

A student read common difference of an A.P. as -2 instead of 2 and got the sum of first five terms as -5, the actual sum of first five terms is `:`

A

25

B

`-25`

C

`-35`

D

35

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SEQUENCES AND SERIES

    MODERN PUBLICATION|Exercise MCQ ( Level-II)|77 Videos

  • SEQUENCES AND SERIES

    MODERN PUBLICATION|Exercise LATEST QUESTIONS|11 Videos

  • RELATIONS

    MODERN PUBLICATION|Exercise RCQS|6 Videos

  • SETS

    MODERN PUBLICATION|Exercise Recent Competitive Questions (RCQs)|6 Videos

Similar Questions

Explore conceptually related problems

In an A.P. if the 12^(th) term is -13 and the sum of the first four terms is 24, what is the sum of the first 10 terms?

If the sum of first n terms of an A.P. is cn^(2) , then the sum of squares of these n terms is :

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

Find the common difference of an AP whose first term is 4, last term is 49 and sum of all terms 265.

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

The third term of G.P is 9. The product if its first five terms is

The third term of a G.P. is 9. The product of its first five terms is

Soppose that all the terms of an arithmetic progression (AP) are natural numbers. If the ratio of the sum of the first seven terms to the sum of the first eleven terms is 6:11 and the seventh term lies between 130 and 140, then the common difference of this AP is

In and AP, the sum of the first 10 terms is -150 and sum of the next ten terms is -550. Find the AP.