Teaching Railway Teacher PRT 2025 Mock Test Series Quantitative Aptitude Elementary Statistics

2, 7, 6 এবং x-এর গড় 15 এবং 18, 1, 6, x এবং y-এর গড় 10 হলে y-এর মান কত?

1
5
2
10
3
-20
4
30
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