railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Ratio and Proportion Fourth Proportional
\({1\over2}, {1\over3}\) এবং \({1\over4}\) এর চতুর্থ সমানুপাতিক কত?
1
\({1\over5}\)
2
\({1\over6}\)
3
\({1\over12}\)
4
\({2\over3}\)