Q. What will be the next number in the following number series ? 48, 24, 72, 36, 108, ?
a) 36
b) 64
c) 72
d) 54
Correct Answer: d) 54
Question from UPPSC Prelims CSAT 2025
Explanation:
The pattern alternates between dividing by 2 and multiplying by 3: 48→24 (÷2), 24→72 (×3), 72→36 (÷2), 36→108 (×3).
Therefore, the next term is 108÷2 = 54. (Equivalently, two interleaved subsequences each multiply by 1.5.)
