Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Number System Quick Math
In a farm there are cows and hens. If heads are counted they are 180, if legs are counted they are 420. The number of cows in the farm is?
1
150
2
130
3
50
4
More than one of the above
5
None of the above