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
An A.P. consists of 50 terms of which 3rd term is 12 and the last term is 106. Find the 29th term of the A.P.
A ladder has rungs 25 cm apart. (See figure). The rungs decrease uniformly in length from 45 cm at the bottom to 25 cm at the top. If the top and bottom rungs are 2 `1/2` m apart, what is the length of the wood required for the rungs?
[Hint: number of rungs = `250/25+ 1`]

Find the sum of all integers between 100 and 550, which are divisible by 9.
Find the 8th term from the end of the AP 7, 10, 13, ……, 184.
The angles of quadrilateral are in whose AP common difference is 10° . Find the angles.
The sum of the first n terms of an AP is given by `s_n = ( 3n^2 - n) ` Find its
(i) nth term,
(ii) first term and
(iii) common difference.
The nth term of an AP is given by (−4n + 15). Find the sum of first 20 terms of this AP?
Choose the correct alternative answer for the following question .
15, 10, 5,... In this A.P sum of first 10 terms is...
Two A.P.’s are given 9, 7, 5, ... and 24, 21, 18, ... If nth term of both the progressions are equal then find the value of n and nth term.
The 19th term of an A.P. is equal to three times its sixth term. If its 9th term is 19, find the A.P.
If four numbers in A.P. are such that their sum is 50 and the greatest number is 4 times, the least, then the numbers are
Q.1
Find the sum of first 10 terms of the A.P.
4 + 6 + 8 + .............
How many terms of the A.P. 25, 22, 19, … are needed to give the sum 116 ? Also find the last term.
The sum of first n terms of an A.P. whose first term is 8 and the common difference is 20 equal to the sum of first 2n terms of another A.P. whose first term is – 30 and the common difference is 8. Find n.
If the sum of the first m terms of an AP is n and the sum of its n terms is m, then the sum of its (m + n) terms will be ______.
The middle most term(s) of the AP: -11, -7, -3,.... 49 is ______.
If 7 times the seventh term of the AP is equal to 5 times the fifth term, then find the value of its 12th term.
Find the sum of all 11 terms of an A.P. whose 6th term is 30.
Solve the equation:
– 4 + (–1) + 2 + 5 + ... + x = 437
