railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Ratio and Proportion Mean Proportional
\(\left( {7 + 2\sqrt 5 } \right)\) तथा \(\left( {21 - 6\sqrt 5 } \right)\) के बीच माध्य आनुपात है:
1
\(\sqrt {69} \)
2
\(\sqrt {29 } \)
3
\(\sqrt {67} \)
4
\(\sqrt {87} \)