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Questions and Answers
What is the formula to find the nth term of an arithmetic progression?
What is the formula to find the nth term of an arithmetic progression?
- $a_n = a_1 - nd$
- $a_n = a_1 - (n-1)d$
- $a_n = a_1 + (n-1)d$ (correct)
- $a_n = a_1 + nd$
If the first term of an arithmetic progression is 3 and the common difference is 4, what is the 5th term?
If the first term of an arithmetic progression is 3 and the common difference is 4, what is the 5th term?
- 23 (correct)
- 7
- 15
- 27
In an arithmetic progression, if the common difference is negative, what happens to the terms as n increases?
In an arithmetic progression, if the common difference is negative, what happens to the terms as n increases?
- The terms alternate in direction
- The terms increase
- The terms stay constant
- The terms decrease (correct)
