Multiple choice

Directions: Find the missing term in the following number series. 15, 29, 47, 67, 87, 105, ?

  1. 111

  2. 117

  3. 119

  4. 121

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
AI explanation

Let's examine the differences between the consecutive terms: 29-15=14, 47-29=18, 67-47=20, 87-67=20, 105-87=18. The differences form the sequence 14, 18, 20, 20, 18, which is a palindrome. Following this pattern, the next difference should be 14. Adding 14 to 105 gives 119.

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