Question

34 +
+10
2
13*
12
10
(1) 7+
7+10- +14+....+84
(ii) -5 + (-8)+(-11)+...+(-230)
In an AP:
(1)
given a =5, d=3,0 = 50, find n and Sni
given a =7,0,3 = 35, find d and S
given a = 37, d=3, find a and S
(iv)
given a, = 15, S = 125, find d and a
(v)
given a = 2, d=8, S = 90, find n and a
(vi)
given a = 4, d=2, S =-14, find n and a.
(vii)
given l=28, S = 144, and there are total 9 terms, find a.
The first and the last terms of an AP are 17 and 350 respectively. If the common differen
is 9, how many terms are there and what is their sum?
Find the sum of first 51 terms of an AP whose second and third terms are 14 and
espectively
n
n
n​

Answer 1

Answer:

answer is 2 because I am confident

Answer 2

Answer:

sorry your question is very long