मान लीजिए $S$ आधार $10$ में संख्या $15^2 \times 5^{18}$ के अंकों का योग है। तो,

  • A
    $S < 6$
  • B
    $6 \leq S < 140$
  • C
    $140 \leq S < 148$
  • D
    $S \geq 148$

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