Question 1 :
If the sum of the first n terms of an AP is $4n – n^2$, What is the 10th term ?
Question 2 :
In an AP, given a = 5, d = 3, $a_n$= 50, find n and $S_n$.
Question 3 :
Find the sum of the following AP: 0.6, 1.7, 2.8, . . ., to 100 terms.
Question 4 :
In an AP, given $a_3 = 15, S_{10} = 125$, find d and $a_{10}$.
Question 5 :
In an AP, given $a = 8, a_n = 62, S_n = 210$, find n and $d$.
Question 6 :
Find the sum of first 51 terms of an AP whose second and third terms are 14 and 18 respectively.
Question 7 :
In an AP, given $a_{12} = 37, d = 3$, find a and $S_{12}$.
Question 8 :
The sum of the third and the seventh termsof an AP is 6 and their product is 8. Find the sum of first sixteen terms of the AP.
Question 9 :
In an AP, given $a = 3, n = 8, S = 192$, find d.
Question 10 :
Find the sum of the first 15 terms in $a_n = 9 – 5n$
