Find the nth term of the sequence 4, 10, 16 ,…
-
A.
2(3n- 1) -
B.
2(2 + 3 n-1) -
C.
2 n + 2 -
D.
2(3n+2)
Correct Answer: Option A
Explanation
(T_{1} = 4; T_2 = 10; T_3 = 16)
(T_{2} – T_1 = T_3 – T_1 = 6)
(T_n = a + (n – 1) d)
= (4 + (n – 1) times 6)
= (4 + 6n – 6)
= (6n – 2)
= 2(3n – 1)