Two APs have the same common difference. The first term of one of these is –1 and that of the other is – 8. Then the difference between their 4th terms is
(A) –1 (B) – 8 (C) 7 (D) –9
What is the common difference of an AP in which a18 – a14 = 32?
(A) 8 (B) – 8 (C) – 4 (D) 4
If the common difference of an AP is 5, then what is a18 – a13
(A) 5 (B) 20 (C) 25 (D) 30
Which term of the AP: 21, 42, 63, 84,… is 210?
(A) 9th (B) 10th (C) 11th (D) 12th
If the 2nd term of an AP is 13 and the 5th term is 25, what is its 7th term?
(A) 30 (B) 33 (C) 37 (D) 38
The 21st term of the AP whose first two terms are –3 and 4 is
(A) 17 (B) 137 (C) 143 (D) –143
The first four terms of an AP, whose first term is –2 and the common difference is –2, are
(A) – 2, 0, 2, 4
(B) – 2, 4, – 8, 16
(C) – 2, – 4, – 6, – 8
(D) – 2, – 4, – 8, –16
The list of numbers – 10, – 6, – 2, 2,… is
(A) an AP with d = – 16
(B) an AP with d = 4
(C) an AP with d = – 4
(D) not an AP
In an AP, if a = 3.5, d = 0, n = 101, then an will be
(A) 0 (B) 3.5 (C) 103.5 (D) 104.5