set MCQs
Showing 10 questions (Total: 160)
An instrument store gives a 10% discount to all students of the original cost of an instrument. During a school sale an additional 15% is taken off the discounted price. Rahim, a student at the local high school, purchases a flute for Tk 306. How much did it originally cost?
Correct Answer:
A: Tk 400
At a college, there are from 2 to 5 introductory English classes each semester, and each of these classes has from 20 to 30 students enrolled. If in one semester 12% of these students enrolled in introductory English fails, what is the greatest possible number of students who failed?
Correct Answer:
A: 12
Explanation:
At a college, there are from 2 to 5 introductory English classes each semester, and each of these classes has from 20 to 30 students enrolled. If in one semester 12% of these students enrolled in introductory English fails, what is the greatest possible number of students who failed? Correct Answer 12 Maximum students enrollment possible = 5×30 = 150 Maximum possible number of students failed = 12% of 150 = 12/100×150 = 18
3x -2 > 2x -1 এর সমাধান সেট কোনটি ?
Correct Answer:
ক: (1,∞)
Explanation:
3x -2 > 2x -1 এর সমাধান সেট কোনটি ? সঠিক উত্তর (1,∞) 3x - 2 > 2x - 1 বা, 3x - 2x > - 1 + 2 বা, x > 1 অর্থাৎ x এর মান 1 এর চেয়ে বড় এবং \infty থেকে ছোট
In recent survey of the student of a public university . It is found that 65% students are good in Mathematics and 45% students are good in Mathematics and 45% students are good in Statistics. How many students are good in both Mathematics and statistics of the public university?
Correct Answer:
D: 10%
Explanation:
In recent survey of the student of a public university . It is found that 65% students are good in Mathematics and 45% students are good in Mathematics and 45% students are good in Statistics. How many students are good in both Mathematics and statistics of the public university? Correct Answer 10% Students good in both mathematics and statisties = (65 + 45)% - 100% = 110% - 100% = 10%
In a class of 60 students, 20 students like Math, 25 students like English and 30 students like Science. If 5 Students like both Math and Science, 8 Students like both English and Science and 3 students like neither of these subjects, how many students like all of the three subjects?
Correct Answer:
A: 2
A এবং B দুটি ঘটনা যেন ,P(A)=12, P(AUB)=34 এবং P(Bc)=58| P(Ac∩BC)= কত?
Correct Answer:
C: 14
Explanation:
A এবং B দুটি ঘটনা যেন ,P(A)=12, P(AUB)=34 এবং P(Bc)=58| P(Ac∩BC)= কত? Correct Answer 14 P(AC∩BC)=P(A∪B)C=1-P(AUB)=1-¾= 1/4
x-2x-1+1x-1-2=0 এর সমাধান সেট কোনটি?
Correct Answer:
ক: ∅
The city library donated some books to a class. If each student takes 4 books. there will be 20 books left. If 3 students do not take a book and the rest of the students take 5 books each, there will be no books left. How many books were donated to the class?
Correct Answer:
C: 160
The student of a school were asked to name their favorite type of pet, Of the 430 student surveyed, 258 said that their favorite type of pet was a dog, Suppose that only 150 students were surveyed, with similar results, about how many students would say that a dog is their type of pet?
Correct Answer:
B: 90
Explanation:
The student of a school were asked to name their favorite type of pet, Of the 430 student surveyed, 258 said that their favorite type of pet was a dog, Suppose that only 150 students were surveyed, with similar results, about how many students would say that a dog is their type of pet? Correct Answer 90 নির্ণেয় ছাত্র সংখ্যা = (258 × 150)÷430 = 90
P(A) = 13, P(B)=34,  A ও B স্বাধীন হলে, P(AUB) এর মান কত?
Correct Answer:
C: 56
Explanation:
P(A) = 13, P(B)=34, A ও B স্বাধীন হলে, P(AUB) এর মান কত? Correct Answer 56 P(AUB) = P(A)+P(B)-P(A).P(B)=13+34-13×34=4+9-312=1012=56