Select the correct option that will fill in the blank and complete the series.
18, 36, 108, 432, 2160, .............
- A15200
- B12960
- C12690
- D14200
Solution & Step-by-step Explanation
Let's find the ratio between consecutive terms in the series:
18
36
=2→18×2=36
36
108
=3→36×3=108
108
432
=4→108×4=432
432
2160
=5→432×5=2160
The terms are being multiplied by consecutive integers: ×2,×3,×4,×5.
Therefore, the next term will be obtained by multiplying by 6:
2160×6=12960
18
36
=2→18×2=36
36
108
=3→36×3=108
108
432
=4→108×4=432
432
2160
=5→432×5=2160
The terms are being multiplied by consecutive integers: ×2,×3,×4,×5.
Therefore, the next term will be obtained by multiplying by 6:
2160×6=12960