What is the 5th term of the arithmetic sequence where the first term is 2 and th

Practice Questions

Q1
What is the 5th term of the arithmetic sequence where the first term is 2 and the common difference is 3?
  1. 11
  2. 14
  3. 17
  4. 20

Questions & Step-by-Step Solutions

What is the 5th term of the arithmetic sequence where the first term is 2 and the common difference is 3?
Correct Answer: 14
  • Step 1: Identify the first term of the sequence, which is given as 2. This is a_1.
  • Step 2: Identify the common difference of the sequence, which is given as 3. This is d.
  • Step 3: Determine which term you want to find. In this case, we want the 5th term, so n = 5.
  • Step 4: Use the formula for the nth term of an arithmetic sequence: a_n = a_1 + (n-1)d.
  • Step 5: Substitute the values into the formula: a_5 = 2 + (5-1) * 3.
  • Step 6: Calculate (5-1) which equals 4.
  • Step 7: Multiply 4 by the common difference (3): 4 * 3 = 12.
  • Step 8: Add this result to the first term: 2 + 12 = 14.
  • Step 9: Therefore, the 5th term of the sequence is 14.
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