Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Ratio and Proportion
If (a + b) : (b + c) : (c + a) = 7 : 4 : 5, and a + b + c =16, then (a² + b² + c²) : (ab + bc + ca) is equal to:
1
26 : 19
2
23 : 15
3
27 : 20
4
More than one of the above
5
None of the above