There are 5 blue , 8 green , 9 white and 2 black marbles in the box . At least how many marbles must Darrell draw before he gets the first green one.
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there are 27 blue,12 yellow and 42 black marbles in a box.Jack close his eyes and draw a marble from the box.at least how many marble must be put out ensure that there are six ball of the same colour
Để chắc chắn có 6 viên cùng màu phải lấy ít nhật là : 42 + 27 + 6 = 75 viên
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thanks, mình cũng vậy nhưng ko biết đúng sai thôi mà
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The ratio of white marbles to black marbles was 2 / 3 . After 6 white marbles were removed and 6 black marbles were added,the new ratio was 1/2.How many white marbles were there at first ?
Gọi số bút trắng là a, bút đen là b
Ta có :
a = b x \(\frac{2}{3}\)
(a - 6) = (b + 6) x \(\frac{1}{2}\)
a - 6 = b x \(\frac{1}{2}\)+ 6 x \(\frac{1}{2}\)
a - 6 = b x \(\frac{1}{2}\)+ 3
b x \(\frac{2}{3}\)- 6 = b x \(\frac{1}{2}\)+ 3
b x \(\frac{2}{3}\)- b x \(\frac{1}{2}\)= 3 + 6
b x \(\frac{1}{6}\)= 9
b = 9 : \(\frac{1}{6}\)= 54
a = 54 x \(\frac{2}{3}\) = 36
Đáp số : 36 cái bút trắng
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is twenty four marbles
if my answer correct k for me
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B has 4 blue marbles , 3 yellow marbles and 1 red one in his pocket.
how many marble must be taken out from his pocket before he gets 3 marble of the same colour
cảm ơn các bn
You have 15 blue marbles. Your friend Duong takes away 3 and gives you 2. You drop 8 but pick up 4. Hung takes 4 and gives 5. You take one from Duong and give it to Hung in exchange for 3 more. You give those 3 to Duong and she gives you a blue and a yellow. Phong comes and takes the blue marbles Duong gave you and gives you a green. You give the green to Hung in exchange for a blue marble. Phong then takes a blue marble from Duong, gives it to Hung for a yellow, and gives you the yellow for a b...
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You have 15 blue marbles. Your friend Duong takes away 3 and gives you 2. You drop 8 but pick up 4. Hung takes 4 and gives 5. You take one from Duong and give it to Hung in exchange for 3 more. You give those 3 to Duong and she gives you a blue and a yellow. Phong comes and takes the blue marbles Duong gave you and gives you a green. You give the green to Hung in exchange for a blue marble. Phong then takes a blue marble from Duong, gives it to Hung for a yellow, and gives you the yellow for a blue marble. How many green marbles do you have?
Debbie keeps her marble collection in a jar. Of the 50 marbles in the jar, 15 are red, 10 are blue, 20 are green and 5 are yellow. Debbie chooses randomly 30 marbles from the jar. How many of these marbles can she expect to be red?
Answer: marbles
mày hỏi tiếng anh chó trả lời !!!!!!!!!!!
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Ko biết nữa mik học lớp 5 chưa biết nhiều về tiếng anh thông cảm nhé
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You have 15 blue marbles. Your friend Duong takes away 3 and gives you 2. You drop 8 but pick up 4. Hung takes 4 and gives 5. You take one from Duong and give it to Hung in exchange for 3 more. You give those 3 to Duong and she gives you a blue and a yellow. Phong comes and takes the blue marbles Duong gave you and gives you a green. You give the green to Hung in exchange for a blue marble. Phong then takes a blue marble from Duong, gives it to Hung for a yellow, and gives you the yellow for a b...
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You have 15 blue marbles. Your friend Duong takes away 3 and gives you 2. You drop 8 but pick up 4. Hung takes 4 and gives 5. You take one from Duong and give it to Hung in exchange for 3 more. You give those 3 to Duong and she gives you a blue and a yellow. Phong comes and takes the blue marbles Duong gave you and gives you a green. You give the green to Hung in exchange for a blue marble. Phong then takes a blue marble from Duong, gives it to Hung for a yellow, and gives you the yellow for a blue marble. How many green marbles do you have?
There're four black box and each box has the same number of marbles. Only one of the following statements is correct about the number of marbles in it.
- Five or Six
- Seven or Eight
- Six or Seven
- Seven or Five
How many marbles are there in each box?
There are 27 blue, 16 yellow and 42 black marbles in a box. Jack closes his eyes and draws a marbles from the box. At least how many marbles must be put out ensure that there are six balls of the same colour? Answer: …( Có 27 màu xanh, 16 vàng và 42 viên bi màu đen trong một hộp. Jack nhắm mắt lại và rút ra một viên bi từ hộp. Ít nhất có bao nhiêu viên bi phải được đưa ra đảm bảo rằng có sáu quả bóng cùng màu? Câu trả lời: … )( Ai có câu trả lời đúng nhất và nhanh nhất tui sẽ tích cho ) ( Có các...
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There are 27 blue, 16 yellow and 42 black marbles in a box. Jack closes his eyes and draws a marbles from the box. At least how many marbles must be put out ensure that there are six balls of the same colour? Answer: …
( Có 27 màu xanh, 16 vàng và 42 viên bi màu đen trong một hộp. Jack nhắm mắt lại và rút ra một viên bi từ hộp. Ít nhất có bao nhiêu viên bi phải được đưa ra đảm bảo rằng có sáu quả bóng cùng màu? Câu trả lời: … )
( Ai có câu trả lời đúng nhất và nhanh nhất tui sẽ tích cho ) ( Có cách giải nha )
Suy nghĩ đơn giản!
Nếu bốc 15 quả bóng thì vẫn có khả năng mỗi màu đúng 5 quả. Do đó bốc thêm 1 quả nữa (tức 16 quả) thì sẽ có 6 quả cùng màu.
Nếu theo cách giải thích của THCS thì: Ta bốc 16 quả thì theo Nguyên lí Dirichlet, sẽ có 6 quả cùng màu.
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7 tháng 11 2021 lúc 16:27
There are 8 blue balls, 8 red balls and 6 green balls in a bag. At least how many balls should be drawn at random to ensure there are red balls?
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