railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Ratio and Proportion Mean Proportional

যদি 12, x, 8 এবং 14 সমানুপাতিক হয়, তাহলে (x - 12) এবং (x + 4) এর মধ্যে গড় সমানুপাতিক কত?

1
12
2
11
3
16
4
15
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