railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Ratio and Proportion Mean Proportional
\(\left( {7 + 2\sqrt 5 } \right)\) மற்றும் \(\left( {21 - 6\sqrt 5 } \right)\) இவற்றிற்கிடையேயான இடைநிலை விகிதம்:
1
\(\sqrt {69} \)
2
\(\sqrt {29} \)
3
\(\sqrt {67} \)
4
\(\sqrt {87} \)