Advertisements
Advertisements
प्रश्न
Find the first term and common difference for the A.P.
127, 135, 143, 151,...
Advertisements
उत्तर
127, 135, 143, 151,...
First term = 127
Common difference = Second term – First term
= 135 – 127
= 8
APPEARS IN
संबंधित प्रश्न
The houses in a row numbered consecutively from 1 to 49. Show that there exists a value of x such that sum of numbers of houses preceding the house numbered x is equal to sum of the numbers of houses following x.
How many terms of the A.P. 18, 16, 14, .... be taken so that their sum is zero?
Find the sum of the following APs.
`1/15, 1/12, 1/10`, ......, to 11 terms.
Find the sum of first 51 terms of an AP whose second and third terms are 14 and 18 respectively.
Find the sum of n terms of an A.P. whose nth terms is given by an = 5 − 6n.
The sum of third and seventh term of an A. P. is 6 and their product is 8. Find the first term and the common difference of the A. P.
In a school, students decided to plant trees in and around the school to reduce air pollution. It was decided that the number of trees, that each section of each class will plant, will be double of the class in which they are studying. If there are 1 to 12 classes in the school and each class has two sections, find how many trees were planted by the students.
Write 5th term from the end of the A.P. 3, 5, 7, 9, ..., 201.
If the nth term of an A.P. is 2n + 1, then the sum of first n terms of the A.P. is
Let the four terms of the AP be a − 3d, a − d, a + d and a + 3d. find A.P.
A manufacturer of TV sets produces 600 units in the third year and 700 units in the 7th year. Assuming that the production increases uniformly by a fixed number every year, find:
- the production in the first year.
- the production in the 10th year.
- the total production in 7 years.
Mrs. Gupta repays her total loan of Rs. 1,18,000 by paying installments every month. If the installments for the first month is Rs. 1,000 and it increases by Rs. 100 every month, What amount will she pays as the 30th installments of loan? What amount of loan she still has to pay after the 30th installment?
Find the sum of first 10 terms of the A.P.
4 + 6 + 8 + .............
The sum of first n terms of the series a, 3a, 5a, …….. is ______.
If the nth term of an AP is (2n +1), then the sum of its first three terms is ______.
Find the sum of those integers between 1 and 500 which are multiples of 2 as well as of 5.
The ratio of the 11th term to the 18th term of an AP is 2 : 3. Find the ratio of the 5th term to the 21st term, and also the ratio of the sum of the first five terms to the sum of the first 21 terms.
Find the sum of all even numbers from 1 to 250.
If the last term of an A.P. of 30 terms is 119 and the 8th term from the end (towards the first term) is 91, then find the common difference of the A.P. Hence, find the sum of all the terms of the A.P.
