Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Ratio and Proportion Mean Proportional
When x is subtracted from each of 21, 22, 60 and 64, the number so obtained, in this order, are in proportion. What is the mean proportional between (x + 1) and (7x + 8)?
1
27
2
18
3
24
4
More than one of the above
5
None of the above