WBCS.LIVE practice question

Find the missing number in the series: 3, 4, 12, 45, 196, ?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 1005
  2. 980
  3. 1015
  4. 895

Correct answer and explanation

Correct answer: 1005

Explanation: āœ… Correct Answer: A) 1005 šŸ“š Explanation: The series follows a complex pattern of multiplying by a consecutive integer and then adding the square of that integer. 3 Ɨ 1 + 1Ā² = 4 4 Ɨ 2 + 2Ā² = 12 12 Ɨ 3 + 3Ā² = 45 45 Ɨ 4 + 4Ā² = 196 Therefore, the next number is 196 Ɨ 5 + 5Ā² = 980 + 25 = 1005.