বিসিএস প্রিলিমিনারি + রিটেন টেস্ট | গণিত | সেট (Set)

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একটি ক্লাসে ৩০ জন ছাত্র আছে তাদের মধ্যে ১৮ জন ফুটবল খেলে এবং ১৪ জন ক্রিকেট খেলে এবং ৫ জন কিছুই খেলে না। কত জন উভয়টিই খেলে?

According to a survey of business firms in a certain city, 750 firms offer their employees health insurance , 640 offer dental insurance and 280 offer health insurance and dental insurance. How many firms offer their employees health insurance or dental

In a group of 15 , 7 have studied Latin , 8 have studied Greek, and 3 have not studied either . How many of these studied both Latin and Greek ?

In a class of 50 students , 18 take music, 26 take art , and 2 take both art and music . How many students in the class are not enrolled in either music or art ?

In how many ways a team of 11 members can be formed from a group of 15 students if a students who is the owner of the ball is always considered a member of the team?

At the beginning of a class period, half of the students in a class go to the library. Later in the period, half of the remaining students go to the computer lab. If there are 8 students remaining in the class, how many students were originally in the cla

2x+3y=36 এবং 2x+y=16 হলে এর সমাধান সেট (x,y)-এর মান কত-

3x + 4y =14, 4x - 3y =2 এর সমাধান সেট কত হবে?

যদি A এবং B দুইটি সেট হয় তবে A n(A U B) = A u(AnB) = কত?

3x-4y =10 এবং 6x-8y=18 এর সমাধান সেট কত?

স্বাভাবিক সংখ্যা সেটের ক্ষুদ্রতম সদস্য কোনটি?

Govt. Laboratory High School has 10 members in its chess team and 14 members in its science club. Five students at the school belong to both the chess team and the science club. How many students belong to only the chess team?

There are 900 students in a school. 4% of them left the school and 50% of the remaining are girls. How many girls remained in the school?

In a class of 30 students 18 play football, 14 play cricket and 5 do not play any game. How many students play both the games?

যেসব স্বাভাবিক সংখ্যা দ্বারা 346 এবং556 কে ভাগ করলে প্রতি ক্ষেত্রে 31 অবশিষ্ট থাকে। তাদের সেট নির্ণয় করুন।