Subject
Bank Exam
Topic
Joint Recruitment Test for 8 Banks (SO) [03-09-2019, AUST
[ Read the following questions carefully and choose the right answer. ]A box contains 5 pink, 3 green and 2 yellow balls . Three balls are picked up randomly . What is the probability that none of the ball drawn is green ?
[ Read the following questions carefully and choose the right answer. ]A box contains 5 pink, 3 green and 2 yellow balls . Three balls are picked up randomly . What is the probability that none of the ball drawn is green ?
ক)
3/16খ)
7/24গ)
5/13ঘ)
4/23Explanation
প্রশ্নে বলা হচ্ছে, একটি বাক্সে 5টি গোলাপী, 3টি সবুজ এবং 2টি হলুদ রংয়ের বল আছে । 3টি বল বাক্সে হতে দৈবভাবে চয়ন করা হলে ঐ 3টি বলের কোনোটাই সবুজ না হবার সম্ভাবনা কত ? মোট বল রয়েছে = 5+3+2 = 10 গোলাপী ও হলুদ বল ( সবুজ নয় ) রয়েছে = 5+2 = 7টি 10টি হতে 3টি বল বাছাইয়ের সংখ্যা হলো = 10 C 3 = 10×9×8/3×2×1 = 120 7টি সবুজ নয় এমন বল হতে 3টি বল বাছাইয়ের সম্ভাবনা = 7 C 3 = 7×6×5/3×2×1 = 35 নির্ণেয় সম্ভাব্যতা = 35/120 = 7/24Related questions
[ Read the following questions carefully and choose the right answer. ]A boat travel with a speed of 10 km/hr in still water. If the speed of the stream is 3 km/hr then find time taken by boat to travel 52 km downstream .[ Fill in the blank with right option. ]The department of heavy industries plans to _ a vibrant ecosystem for the capital goods sector to _ manpower issues.[ Read the following questions carefully and choose the right answer. ]Rahima can row 16 km/hr in still water. It takes her thrice as long to row up as to row down the river . Find the difference between her speed in still water and that of the stream .[ Fill in the blank with right option. ]The emergency services _ the accident site as soon as the news of the train collision was _ to them.[ Read the following questions carefully and choose the right answer. ]A train leaves a station A at 7 am and reaches another station B at 11 am. Another train leaves B at 8 am and reaches A at 11:30 am. The two trains cross one another at[ Fill in the blank with right option. ]Market leaders usually want to _ their market share even further, or at least to protect their current market share .[ Read the following questions carefully and choose the right answer. ]A train 150m long crosses a milestone in 15 seconds and crosses another train of the same length travelling in the opposite direction in 12 seconds. The speed of the seconds train in km/hr is[ Fill in the blank with right option. ]_ some employers oppose the very existence of unions, many theorists stress the necessity of unions.