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Questions and Answers
What is the sequence of triangular numbers?
What is the sequence of triangular numbers?
- The sequence of partial sums of an arithmetic sequence (correct)
- An arithmetic sequence
- The sequence of partial sums of a geometric sequence
- A geometric sequence
What is the closed formula for the triangular numbers?
What is the closed formula for the triangular numbers?
- T_n = n(n+1)/2 (correct)
- T_n = n
- T_n = n^2
- T_n = (n+1)/2
What is the relationship between triangular numbers and handshakes at a party?
What is the relationship between triangular numbers and handshakes at a party?
- There is no relationship
- Triangular numbers count the number of people at a party
- Triangular numbers count the number of handshakes at a party (correct)
- Triangular numbers count the number of drinks at a party
