state gov Bihar Police Constable (सिपाही) Mock Test Series 2025 Quantitative Aptitude Ratio and Proportion Simple Ratios

যদি, c : d = 9 : 10 হয়, তবে, (6c - 7d)/(7c + 8d)এর মান কত ?

1

13/143

2

17/18

3

-16/143

4

15/17

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