Question Text
Question 1 :
Does $a_1, a_2, . . ., a_n, . . $ form an AP where $a_n = 9 – 5n$?
Question 2 :
If the sum of the first n terms of an AP is $4n – n^2$, What is the nth term ?
Question 3 :
Determine the AP whose third term is 16 and the 7th term exceeds the 5th term by 12.
Question 4 :
Check whether – 150 is a term of the AP : 11, 8, 5, 2 . . .
Question 5 :
If the sum of the first n terms of an AP is $4n – n^2$, What is the 2nd term ?
Question 6 :
In an AP, given $a = 7, a_{13} = 35$, find d and $S_{13}$.
Question 7 :
If the sum of the first n terms of an AP is $4n – n^2$, What is the 10th term ?
Question 8 :
Find the sum of the following AP: 7 + 10.5 + 14 + . . . + 84
Question 9 :
Ramkali saved Rs. 5 in the first week of a year and then increased her weekly savings by Rs. 1.75. If in the nth week, her weekly savings become Rs. 20.75, find n.
Question 10 :
Which term of the AP : 121, 117, 113, . . ., is its first negative term?
