math

posted by .

Find the term of AP is 3and eleventhterm is 18. Find the number of term in the progression. Ie the sum is 81.

  • math -

    All I could make out from your post is
    that the 11th term is 18

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Maths

    1) In the arithmetic progression, the 8th term is twice the 4th term and the 20th term is 40. Find the common difference and the sum of the terms from the 8th to the 20th term inclusive. 2) Find the least number of terms of the AP, …
  2. math

    the first term of an arthmetic progression is 1 and its last term is 28, find the sum of the progression if their number is 10
  3. Math

    the sum of the 4th term and the 5th term is 12.if the 4th term of the progression is 8, find the common ratio and the 1st term of the progression.
  4. maths

    1) The first term of arithmetic progression is -20 and the sum of it's term is 250. find it's last term if the number of it's terms is 10 2) Find the fifth term from the arithmetic progression -12, -9, -6 hence find the sum of it's …
  5. GP Caluculus

    The third term of a geometric progression is 16. The sum of the third term and the fouth term is 8. Find (a)the first term and the common ration of the progression (b)the sum of infinity of the progression
  6. GP Caluculus

    The third term of a geometric progression is 16. The sum of the third term and the fouth term is 8. Find (a)the first term and the common ration of the progression (b)the sum of infinity of the progression
  7. GP Caluculus

    The third term of a geometric progression is 16. The sum of the third term and the fourth term is 8.Find (a)the first term and the common ratio of the progression. (b)the sum of infinity of the progression.
  8. Arithmetic Progression

    In an AP the 6th term is half the 4th term and the 3rd term is 15. a. Find the fist term and the common difference. b. How many times are needed to give a sum that is less than 65?
  9. math

    The 3rd term of an Arithmetic Progression is 10 more than the first term while the fifth term is 15 more than the second term. Find the sum of the 8th and 15th terms of the Arithmetic Progression if the 7th term is seven times the …
  10. Math

    The third term of a geometric progression of positive terms is 18 and the fifth term is 162 Find the common ration and the first term?

More Similar Questions