গণিত | সম্ভাব্যতা (Probability)

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Questions

২০ সদস্যবিশিষ্ট একটি ফুটবল দল থেকে একজন অধিনায়ক ও একজন সহ-অধিনায়ক কতভাগে নির্বাচন করা যাবে?

একটি গোল মুদ্রা টেবিলে রাখা হলো। এই মুদ্রার চারপাশে একই মুদ্রা কতটি রাখা যেতে পারে যেন তারা মাঝের মুদ্রাটিকে এবং তাদের দুপাশে রাখা দুটি মুদ্রাকে স্পর্শ করে?

In a box , there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green ?

A Zoo keeper counted the heads of the animals in a zoo and found it to be 80. When he counted the legs of the animals he found it to be 260. If the zoo had either pigeons or horses, how many horses were there in the zoo ?

In a box, there are 8 red, 7 blue, and 6 green balls. One ball is picked up randomly , what is the probability that it is neither red nor green ?

একটি ছক্কাকে একবার নিক্ষেপ করা হলে, ২ থেকে বড় সংখ্যা পাবার সম্ভাবনা কত?

What is the probability that the product of two integers ( not necessarily different integers ) randomly selected from the numbers 1 through 20, inclusive , is odd ?

Ina zoo , each pigeon has 2 legs, and each rabbit has 4 legs. The head count of the two species together is 12 , and the leg count is 32. How many pigeons and how main rabbits are there in the zoo ?

A coin is tossed twice. What is the probability of getting head on first toss and tail on second toss?

In a class of 60, where girls are twice that of boys , Kamal ranked seventeenth from the top . If there are 9 girls ahead of Kamal , how many boys are after him in rank ?

চাকরি পাওয়ার সম্ভাবনা ৪/৫ হলে চাকরি না পাওয়ার সম্ভাবনা কত?

In a 100m race, Jami beats Rony by 4 sec. If Jami allowed Rony to start 16m ahead of him, then Jami and Rony reach the finishing point at the same time. How long does Jami take to run the 100m race?

There are 8 job applicants sitting, in waiting room, 4 women and 4 men. If two of the applicants are selected at random, what is the probability that both will be women?

A card is randomly drawn from a deck of 52 cards. What is the probability of getting a king or Queen ?

The probability that a student will graduate with honors and get a good job is 0.09 whereas the probability that a student will graduate with honors is 0.1. What is the probability that a student will get a good job if she graduates with honors?