Mathematics Concepts Quiz

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Questions and Answers

What is the formula for the nth term of an arithmetic sequence?

  • $a_n = a_1 imes (n-1)d$
  • $a_n = a_1 + (n-1)d$ (correct)
  • $a_n = a_1 imes d^{n-1}$
  • $a_n = a_1 + nd$

What is the sum of the first 10 terms of the arithmetic sequence with first term $a_1 = 3$ and common difference $d = 4$?

  • $S_{10} = 165$ (correct)
  • $S_{10} = 120$
  • $S_{10} = 300$
  • $S_{10} = 235$

What is the common ratio in the geometric sequence with first term $a_1 = 2$ and 5th term $a_5 = 32$?

  • 6
  • 4 (correct)
  • 8
  • 2

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