Quantitative Aptitude Algebra

যদি x + y = 25 এবং xy = 35 হয়, তবে (1/x) + (1/y)= এর মান নির্ণয় করুন?

1
\(\sqrt{5\over7}\)
2
7/5
3
5/7
4
\(\sqrt{7\over5}\)

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