Multiple choice

Directions: In the following question, a number series is given, in which one number is missing. Find out the missing number. 65, 134, 276, ?, 1168

  1. 485

  2. 522

  3. 568

  4. 689

  5. 923

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C Correct answer
Explanation

Pattern: 65*2 + 4 = 134; 134*2 + 8 = 276; 276*2 + 16 = 568; 568*2 + 32 = 1168.

AI explanation

The series follows a pattern where each term is multiplied by 2 and then a successive odd number is added to reach the next term. The second term is (65 * 2) + 4 = 134, and the third term is (134 * 2) + 8 = 276. Continuing this logic, the missing fourth term is (276 * 2) + 16 = 568, and we can verify this because (568 * 2) + 32 = 1168. The missing number is 568.