1) What is arithmetic sequence? a) Tn= 2a+nd b) Tn = a+nd c) Tn = a+(n-1)d d) Tn = 2a+(n-1)d 2) What is arithmetic series? a) Sn = a+(a+d)+(a+2d)+... b) Sn = a/2+(a+d)/2+(a+2d)/2+... c) Sn = a+(a+r)+(a+2r)+... d) Sn = a/2+(a+r)/2+(a+2r)/2+... 3) What is geometric sequence? a) Tn = a(rn +1) b) Tn = a(rn - 2) c) Tn = a(rn + 2) d) Tn = a(rn - 1) 4) What is geometric series? a) Sn = a/2+(ar)/2+(ar2)/2+... b) Sn = a+(ar)+(ar2)+... c) Sn = a+(ad)+(ad2)+... d) Sn = a/2+(ad)/2+(ad2)/2+... 5) When n is a positive integer: a) Validation for the expansion is |b|>1 b) Validation for the expansion is |b|<1 c) Validation for the expansion is ℝ d) Validation for the expansion is ℝ- 6) When n is a negative integer: a) Validation for the expansion is |b/a|<1 b) Validation for the expansion is |b/a|>1 c) Validation for the expansion is|b/a|< ℝ d) Validation for the expansion is |b/a|> ℝ 7) When n is a fraction: a) Validation for the expansion is|b/a|< ℝ b) Validation for the expansion is |b/a|<1 c) Validation for the expansion is |b/a|> ℝ d) Validation for the expansion is |b/a|>1 8) Given -6,-4.5,-3,-1.5,... , what is the d? a) 1 b) -1.5 c) -1 d) 1.5 9) Given 4,-12,36,-108,... , what is the r? a) 3 b) 2 c) -2 d) -3 10) 'ar' is refered to... a) T∞ b) T1 c) T2 d) T3

☆ Sequence & Series ☆

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