Correct Answer: Option C

Explanation

\(\frac{(n + 1)(n + 2)}{2}\)

If n = 1, the expression becomes 3

n = 2, the expression becomes 6

n = 4, the expression becomes 15

n = 5, the expression becomes 21

• the bearing of ships A and B from a Port P are 225 and 116 respectively .ship A is 3.9km... Answer this

  2 Answers   ·   Mathematics   ·   5 years ago
• WAEC TIME TABLE for 2026? Answer this

  1 Answers   ·   Chemistry   ·   2 days ago
• I want to ask if I can get 200? Answer this

  1 Answers   ·   9 hours ago