Subject
Bank Exam
Topic
United Commercial Bank Ltd. - Probationary Officer - 2016
There are 8 job applicants sitting in a waiting room of which four are women and four are men. If two of the applicants are selected at random, what is the probability that both will be women ?
There are 8 job applicants sitting in a waiting room of which four are women and four are men. If two of the applicants are selected at random, what is the probability that both will be women ?
ক)
1/2খ)
3/7গ)
1/4ঘ)
3/14Explanation
Solution: অনুবাদঃ একটি Waiting room 8 জন Job applicants বসে আছে । তাদের মধ্যে 4 জন নারী এবং 4 জন পুরুষ । যদি দুইজন প্রার্থীকে Randomly বা দৈবভাবে বাছাই করা হয়, তবে দুইজন প্রার্থীই নারী হওয়ার সম্ভাবনা কত ? এখানে, প্রথম Selection এ 8 জন Job applicants থেকে 1 জন Woman আসার Probability = 4/8 = 1/2 আবার, প্রথবার Woman আসার পর দ্বিতীয় বার Total 8 জন থেকে একজন কমে (8 - 1) = 7 জন হবে এবং সেক্ষেত্রে Woman একজন কমে হবে (4 - 1) = 3 জন । দ্বিতীয় বার 7 জন Job applicants থেকে 1 জন Woman আসার Probability = 3/7 পরপর শুরুতে দুইজনই Woman আসার মোট Probability = Exam Shortcut: Both women হবার সম্ভাবনা = ১ম বার Women এবং পরের বারেও Women হবার সম্ভাবনা = [ এবং (and) হলে গুণ হবে ]Related questions
It is estimated that cost of living will increase by 8.50 percent per year. How much should a piece of candy cost in three years if it costs Tk. 1.50 today ?At a photocopy center, the first 10 copies cost x Taka each. Each of the next 50 copies costs 2 Taka less per copy. From the 61stcopy on, the cost is 1 Taka per copy. In terms of x, how much does it cost in Taka to have 200 copies made ?A boy goes to see a film and finds a man who is his relative. The man is the husband of the sister of his mother. How is the man related to the boy ?Mr. Jaman is insured completely for Tk. 1,50,000 of damages to his machinery. For any damage over Tk. 150000, the insurance company will pay Tk. 150000 plus only 15% of the additional amount. For a recent accident, Mr. Jaman was paid Tk. 15,6000 by the insurance company. What was the total amount of the damage estimated ?which is the next logical number in this sequence of numbers 23, 5, 48, 12, 27, 9, 37, 10, 61, 7, 88 ?If (x2- 7x + 18) = 6, which of the following must be false ?Laura loves to eat apple but not the banana while John loves to eat mango and the banana. Kim loves to eat mango but not the apple and Jim loves to eat banana but not the mango. If each child loves to eat two of the three fruits, Which one has the same preference as John ?The average of 5 numbers is 40. If 2 more numbers, with an average of 21, are added to these numbers, what will be the average of the combined 7 numbers ?