What is the next number in the following series?
15, 16, 34, 105, 424,?
Show answer & explanation
Correct answer: C
Explanation
The pattern followed in the given series is:
• 15 × 1 + 1 = 16
• 16 × 2 + 2 = 34
• 34 × 3 + 3 = 105
• 105 × 4 + 4 = 424
Similarly, for the next term:
• 424 × 5 + 5 = 2125
Therefore, the correct answer is (C) 2125.