Find the next term in the series: 1, 2, 4, 6, 7, 18, 10, 54, ?
A162
B13 ✓ Correct
C64
D72
Correct answer: (B) 13
Explanation
The next term is 13.
The series interleaves two patterns by position.
Odd positions 1, 4, 7, 10 increase by 3 each time.
Even positions 2, 6, 18, 54 multiply by 3 each time.
The term after 54 is an odd-position value: 10 + 3 = 13.
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