Multiple choice

What is the $4^{th}$ term of the sequence $1,11,111,...$

  1. $1$
  2. $11$
  3. $111$
  4. $1111$
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D Correct answer
Explanation

The sequence follows the pattern of repeating the digit 1 an increasing number of times. The 1st term is 1, 2nd is 11, 3rd is 111, so the 4th term is 1111.

AI explanation

The given sequence appends an additional digit 1 to the previous number to form each subsequent term. The first term is 1, the second term is 11, and the third term is 111. Following this exact pattern, the fourth term is formed by appending a 1 to the end of 111, resulting in 1111.

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