Question Text
Question 1 :
Find the sum of first 51 terms of an AP whose second and third terms are 14 and 18 respectively.
Question 2 :
In an AP, given $a = 8, a_n = 62, S_n = 210$, find n and $d$.
Question 3 :
In an AP, given $a_3 = 15, S_{10} = 125$, find d and $a_{10}$.
Question 5 :
An AP consists of 50 terms of which 3rd term is 12 and the last term is 106. Find the 29th term.
Question 7 :
If the sum of the first n terms of an AP is $4n – n^2$, What is the 10th term ?
Question 8 :
How many terms of the AP : 9, 17, 25, . . . must be taken to give a sum of 636?
Question 9 :
If the sum of the first n terms of an AP is $4n – n^2$, What is the 3rd term ?
Question 10 :
Find the sum of the first 15 terms in $a_n = 3 + 4n$.
