The first term a of an A.P is equal to twice the
common difference d. Find, in terms of d, the 5th
term of the A.P.
A
4d
B
5d
C
6d
D
a + 5d
E
2a + 4d
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
Tn = a + (n - 1)d; AP; a = 2d; Tn = 2d + (n - 1)d
T5 = 2d + (5 - 1)d = 2d + 4d = 6d
Source: Myschool Past Questions Archive (Record #22916)