Arithmetic Progression (A.P.) Formulas Quiz
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Questions and Answers

What is the formula to find the 'n'th term of an arithmetic progression (A.P.)?

  • n = a + (n+1)d
  • n = a - nd
  • n = a + nd
  • n = a + (n-1)d (correct)

    • In an A.P., if the common difference (d) is negative, what can be said about the sequence?

  • The common difference cannot be negative in an A.P.
  • The terms will alternate between increasing and decreasing
  • The terms will increase by a constant amount
  • The terms will decrease by a constant amount (correct)

    • What is the sum of the first 'n' terms of an A.P. given the first term 'a' and the common difference 'd'?

  • $rac{n}{2}(a + (n-1)d)$ (correct)
  • $n(a + (n-1)d)$
  • $rac{n}{2}(2a + (n-1)d)$
  • $n(2a + (n-1)d)$

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