Home
Class 10
MATHS
The sum of first 7 terms of an AP is 63 ...

The sum of first 7 terms of an AP is 63 and the sum of next 7 terms is 161. Find `a_(28)`.

Text Solution

Verified by Experts

The correct Answer is:
`a_(25) = 3+ (28 -1) 2=3 + (27 xx 2) 3 + 54 = 57`
Promotional Banner

Topper's Solved these Questions

  • ARITHMETIC PROGRESSIONS

    ZEN PUBLICATION|Exercise ZEN ADDITIONAL QUESTIONS (LONG-ANSWER [LA] TYPE - QUESTIONS)|14 Videos

  • ARITHMETIC PROGRESSIONS

    ZEN PUBLICATION|Exercise ZEN ADDITIONAL QUESTIONS (HOTS [HIGHER ORDER THINKING SKILLS] - QUESTIONS)|4 Videos

  • ARITHMETIC PROGRESSIONS

    ZEN PUBLICATION|Exercise ZEN ADDITIONAL QUESTIONS (SHORT-ANSWER [SA] TYPE 1 - QUESTIONS)|24 Videos

  • AREA RELATED TO CIRCLES

    ZEN PUBLICATION|Exercise ADDITIONAL QUESTIONS (HIGHER ORDER THINKING SKILLS)|7 Videos

  • CIRCLES

    ZEN PUBLICATION|Exercise ZEN ADDITIONAL QUESTIONS ( HOT [HIGHER ORDER THINKING SKILLS] - QUESTIONS) (IIT AND IMO)|9 Videos

Similar Questions

Explore conceptually related problems

The sum of first 2n terms of an AP is alpha . and the sum of next n terms is beta, its common difference is

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 the first 8 terms of an A.P. is 100 and the sum of its first 19 terms is 551. Find the first term and the common difference of the AP.

In a Geometric progression the sum of first three terms is 14 and the sum of next three terms of it is 112. Find the Geometric progression.

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 sum of first p terms of an A.P is equal to the sum of the first q terms , then find the first (p+q) terms .

The sum of first 14 terms of an AP is 1505 and its first term is 10. Find its tenth term.

If the sum of first 7 terms of an AP is 49 and that of 17 terms is 289, find the sum of first n terms.

If the sum of first 7 terms of an A.P is 49 and that of 17 terms is 289, find the sum of first n terms.

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