Mathematics
Mathematics, 29.07.2021 03:50, marciii

Cho một chùm chìa khoá có 5 chìa trong đó có 2 chìa mở được người ta thử ngẫu nhiên từng chìa cho đến khi mở được nếu không mở được thì bỏ ra. Gọi x là số lần thử hãy lập bảng phân phối xác suất của x

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Cho một chùm chìa khoá có 5 chìa trong đó có 2 chìa mở được người ta thử ngẫu nhiên từng chìa cho đế...

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