Multiple choice

What is the average of first 11 terms of the given sequence? 4, 8, 12, 16, ...

  1. 4

  2. 16

  3. 22

  4. 24
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D Correct answer
Explanation

This is an arithmetic progression with a = 4 and d = 4. The 11th term is 4 + 10*4 = 44. The average of an AP is (first + last) / 2 = (4 + 44) / 2 = 24.

AI explanation

The sequence is an arithmetic progression with the first term a = 4 and the common difference d = 4. The 11th term is calculated as a + 10d, which is 4 + 40 = 44. The average of the first 11 terms is the average of the first and 11th terms, meaning (4 + 44) / 2 = 24.

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