railway RPF Constable Mock Test Series 2024 Quantitative Aptitude Number System Rational or Irrational Numbers
रिक्त स्थान की पूर्ति कीजिए।
यदि \(\rm x = \frac{1}{3} \) तथा\(\ y=\frac{6}{7}\) है, तो \( xy-\frac{y}{x}=\)__________
1
\(\frac{-16}{7}\)
2
\(\frac{-15}{7}\)
3
\(\frac{-17}{8}\)
4
\(\frac{-21}{7}\)