railway RRB Technician Grade 1 Mock Test 2024 Quantitative Aptitude Elementary Statistics

পর্যবেক্ষণ 13, 21, 17, 12, 15, 19, 19, 12, 20, 25 এবং 17 এর পরিসর এবং মধ্যমানের গড় কত?

1
15
2
16
3
15.5
4
16.5
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