In an arithmetic sequence first and fourth numbers are 24 and 42. Find the third number.
30
36
28
21
The second term of an AP is (x - y) and the 5th term is (x + y) then its first term is
x - (1/3y)
x - (2/3y)
x - (4/3y)
x - (5/3)y
The nth term of an AP is 3n - 2 then (n + 2)th term is
3n + 2
3n+6
3n-4
3n+4
The nth term of an AP is (3n - 8). Then the sum of its first 5 terms is
11
5
-11
-5
xn = n2 + 2. Find the third term
8
10
The nth term of the sequence 3, 6, 9.... is
3n+1
3n
3n+2
None of these
nth term of an AP is 7n - 2 .Its 5th term is
35
34
37
33
xn = 4 - 3n. Find the second term
-8
-3
-2
In a certain AP 5 times the 5th term is equal to 8 times the 8th term, then its 13th term is
0
-1
-12
-13
The first and 5th terms of an AP are 6a and -6a. Then the common difference is
-3a
3a
6a
