railway DFCCIL Executive 2025 Mock Test Quantitative Aptitude Simplification Surds and Indices

यदि 1440 = 2a × 3b × 5c है, तो 3a × 2-b × 5-c का मान ज्ञात कीजिए।

1
81/40
2
243/40
3
243/20
4
81/20
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