engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Mathematics Statistics Coefficient of Variation

यदि x के विचरण का अंकगणित औसत और गुणांक क्रमशः 10 और 40 हैं, तो y = 10 - 2x का विचरण है:

1
32
2
64
3
22
4
16
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