Question
What is the rule of the sequence 2 4 6?
Answer
8
- Q: What kind of sequence is it? A: It is an arithmetic sequence.
- Q: What is the common difference? A: The common difference is 2.
- Q: What is the formula to find the nth term of an arithmetic sequence? A: The formula is an = a1 + (n-1)d, where an is the nth term, a1 is the first term, n is the term number, and d is the common difference.
- Q: What is the first term? A: The first term is 2.
- Q: What is the fourth term? A: The fourth term is 8, which can be found using the formula: a4 = 2 + (4-1)2 = 8.