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

यदि एक वितरण का प्रसरण 81 है और गुणांक भिन्नता 30% है, माध्य ज्ञात कीजिए।

1

25

2

30

3

35

4

40

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