WebEach of the other identical-box arrangements get counted 3! = 6 (not just 3) times when we distinguish the boxes, because the pens are distinguishable and the only way to have multiple boxes with identical contents is to have two empty boxes. Thus the 81 − 3 = 78 non-4-pens-in-one-box arrangements comprise 78 / 6 = 13 identical-box arrangements. WebJul 15, 2024 · Answer: 6 or 9 Step-by-step explanation: Given the following : Let the number of green pens = x Number of red pens = x + 3 Probability of picking same color = 17/35 Taking two pens at random; probability of picking two pens of same color.
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WebMar 28, 2024 · Step-by-step explanation: Let no. of red pens in the box= x ∴ No. of blue pens in the box = 3x (as blue pens are 3 times no. of red pens) Total no. of pens in the box= 12 According to the problem, x+3x= 12 4x =12 x= 12/4 =3 No. of red pens = … Weba. What is the probability that you need to pick up a pen 3 times? b. What is the probability that you need to pick up a pen at least 4 times? Question: In a box there are r red pens and b blue pens. Pens are randomly selected, one at a time, until a red one is obtained. Assume that each selected pen is replaced before the next one is drawn. a. first posting of ips
How many ways of putting 4 distinct pens in 3 identical boxes are there …
WebA stationery bag contains five pencils, two erasers and five pens. If three stationeries are randomly selected from the bag (with replacement), what is the probability that a) one pencil, one eraser and one pen b) the three item selected either all pencils or all pens c) none of the pencils is selected Please help me to solve this question WebIn a box there are 3 red pens, 2 green pens, and 1 blue pen. What is the probability of picking a red pen, not replacing it, and then picking a blue pen? answer choices 1/2 4/11 1/10 2/3 Question 2 180 seconds Q. There are 6 red marbles, … WebSolution: 1 There are 4 students each with ten pencils at each table. There are 10, 20, 30, 40 pencils all together. There are 6 tables with 4 boxes with ten pencils each. We can combine the 4 boxes from 2 tables to get 8 boxes, and then take 2 from one table to get 10 boxes. We can do this twice. firstpost live cricket score