railway RPF Constable Mock Test Series 2024 Quantitative Aptitude Ratio and Proportion Fourth Proportional

यदि x = 3 है, तो 7x - 1, 9x + 5 और 8x + 1 का चतुर्थानुपाती ज्ञात कीजिए।

1
50
2
30
3
60
4
40
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