What is a sub 5= 31, a sub 10= 1, what is a sub 1?

To determine \( a_1 \) given \( a_5 = 31 \) and \( a_{10} = 1 \), we need more information about the sequence, such as whether it's arithmetic, geometric, or another type. Without that, it's impossible to find \( a_1 \) directly.

Could you specify the type of sequence or provide a formula that defines the sequence? That way, I can help you find \( a_1 \).

Would you like more details or have any questions?

Here are 5 questions to consider:

1. Is the sequence arithmetic or geometric?
2. Do you have a general formula for the sequence?
3. Can you provide any other terms in the sequence?
4. Are there any patterns you've noticed in the sequence?
5. What are the specific rules governing this sequence?

**Tip:** When working with sequences, always try to identify a pattern or formula that links the terms together. This makes it easier to find unknown terms.

Learn how to determine the first term of a sequence when given specific terms like a_5 = 31 and a_10 = 1. Understand the principles of arithmetic and geometric sequences and how to identify patterns to find the initial term. Suitable for advanced high school students and anyone interested in sequence analysis.

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