Question
12 17 44 147 ?
3065 18420Solution
12 × 1 + 5 = 17 17 × 2 + 10 = 44 44 × 3 + 15 = 147 147 × 4 + 20 = 608 608 × 5 + 25 = 3065 3065 × 6 + 30 = 18420
                More Missing Series Questions
              
            - What will come in place of the question mark (?) in the following series? 
 
 6, 24, 60, ?, 210, 336
- 4, 12, 36, 108, ?, 396 
- 5, 18, 39, 68, 105, ? 
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- 612, 487,?, 396, 388, 387 
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- 16 25 36 49 64 ? 
- Find the missing number in the given number series. 
 
 512, 128, 32, 8, ?, 1