togaranaroja

If n = 4, evaluate: (n + 3)!/(n + 1)! (n - 2)! a) 10 b) 20 c) 21 d) none

If n = 6, evaluate: (n - 1)!/(n - 4)! (n - 3)! 10 20 21 none Find the general term, a_n, of the following arithmetic sequences: 2, 5, 8, 11, 14, 17...... a_n = 2 + (n + 1)3 a_n = 3 + (n - 1)2 a_n = 3n + 1 a_n = 3n - 1