Multiple choice

Choose the correct alternative from the given ones that will complete the series- $169, 144, 121, 100, ----?$

  1. 99

  2. 74

  3. 81

  4. 101
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The correct answer is 81. The series shows perfect squares in descending order: 169 = 13², 144 = 12², 121 = 11², 100 = 10². Following this pattern, the next term is 9² = 81. The sequence is decreasing by one in the base number: 13, 12, 11, 10, 9.

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