



Có 152
In Stock
$34.99
$29.99
Shipping and Returns Policy
- Deliver to United States » Shipping Policy «
- - Shipping Cost: $5.99
- - Handling time: 2-3 business days
- - Transit time: 7-10 business days
- Eligible for » Returns & Refund Policy « within 30 days from the date of delivery
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một hộp có 5 viên bi đỏ 3 viên bi vàng và 4 viên bi xanh
- (5/12) * 100% ≈ 41.67% 108
- 7 55
- Có bao nhiêu viên bi đỏ trong hộp?
- Sau khi trộn hai hộp (hộp ban đầu và hộp 2 đỏ 1 vàng), tổng số viên bi là bao nhiêu?
- 11 (5 đỏ + 4 xanh + 2 vàng) 69
- Nếu bạn muốn tỷ lệ viên bi đỏ là 50%, bạn cần thêm bao nhiêu viên bi đỏ (giả sử không thêm bi màu khác)?
- Trong trường hợp lấy có hoàn lại, xác suất cả hai viên đều khác màu là bao nhiêu?
- 1/13 142
- 1 dư 1 106
- Tổng số viên bi trong hai hộp giống hệt nhau là bao nhiêu?
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International Delivery is available for this product. The cost and delivery time depend on the country.
You can now return your online order in a few easy steps. Select your preferred tracked returns service. We have print at home, paperless and collection options available.
You have 28 days to return your order from the date it’s delivered. Exclusions apply.
View our full Returns and Exchanges information.
Our extended Christmas returns policy runs from 28th October until 5th January 2025, all items purchased online during this time can be returned for a full refund.
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