Which of the following numbers will replace the question mark (?) in the given series?
12, 32, 123, 609,?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 3647.
Given series: 12, 32, 123, 609,?
12 × 3 - 4 = 32; 32 × 4 - 5 = 123; 123 × 5 - 6 = 609; 609 × 6 - 7 = 3647