3 - 2x, 1, 3x - 7 are three consecutive terms of an AP. Then x is
8
6
10
12
Which term of the A.P 21, 18, 15, ..... is 0?
6th
7th
8th
9th
kth term of an AP is 5k + 1. Then the sum of n terms is
n/2 [5n + 7]
n/2 [7n + 5]
n/2 [5n - 7]
(n / 2)5n
Sum of first 10 natural numbers is
50
53
55
57
Find a30 - a20 for the A.P. -9, -14, -19, -24, . . . . .
-50
25
-25
The middle term of the AP 1, 8, 15....... 505 is
263
243
253
203
The nth term of the sequence 3, 6, 9.... is
3n + 1
3n
3n + 2
3n - 2
Number of terms between 100 and 300 which are divisible by 6 is
34
35
40
38
The number of odd integers between 8 and 80 is
41
39
37
36
If 103 is the first term of an AP and -22 is the common difference then the second term is
125
81
-46
-81
