Subject
পেট্রোবাংলা
Topic
বাপেক্স (সহকারী ব্যবস্থাপক) - ২৬.০১.২০২৩
There are 8 marbles in a box 6 red and 2 black. If you randomly pick 2 marbles simultaneously what is the probability that you will get one red and 1 black marble?
There are 8 marbles in a box 6 red and 2 black. If you randomly pick 2 marbles simultaneously what is the probability that you will get one red and 1 black marble?
ক)
3/7খ)
3/14গ)
3/8ঘ)
NoneExplanation
দেওয়া আছে, লাল বল = 6 টি কালো বল = 2 টি ∴নির্ণেয় সম্ভাব্যতা= ( 6 C 1 × 2 C 1 )/ 8 C 2 = (6 × 2) / 28 = 3/7Related questions
শুদ্ধ বানান নির্ণয় করুন।শুদ্ধ বানান নির্ণয় করুন।Jashim and Imran start walking from A to B at 5 and 3 km per hour respectively. Jashim reaches B and starts back for A. How far from B will he meet Imran if the distance between A and B is 32 km?শুদ্ধ বানান নির্ণয় করুন।Babu bought two varieties of pulse, costing Tk. 50 and Tk. 60 per Kg. each, and mixed them in some ratio. He then sold the mixture at Tk. 70 per kg., making a profit of 20 percent. What was the ratio of the mixture?শুদ্ধ বানান নির্ণয় করুন।3/8 of all applicants for a job are male. 3/4 of all applicants are rejected in the first round including 2/3 of all male applicants. What fraction of applicants remaining after the first round are male?'অহর্নিশ'