Find the 4th term of an A.P, whose first term is 2 and the common...
MATHEMATICS
WAEC 1990
Find the 4th term of an A.P, whose first term is 2 and the common difference is 0.5
- A. 0.5
- B. 2.5
- C. 3.5
- D. 4
Correct Answer: C. 3.5
Explanation
\(U_{n} = a + (n - 1)d\)
\(U_{4} = 2 + (4 - 1) \times 0.5\)
= \(2 + 1.5\)
= 3.5
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