defence exam Indian Coast Guard Assistant Commandant (GD/CPL) 2025 Test Series Mathematics Statistics Variance and Standard Deviation

పంపిణీ మధ్య వ్యత్యాసం 81 మరియు గుణకం వ్యత్యాసం 30%. అయితే సగటు ఎంత?

1

25

2

30

3

35

4

40

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