16 . In a class, 20% of the students are below 20 years of age. The number of students above 20 years of age is two-third of the number of students of 20 years of age which is 48. What is the total number of students in the class?

A. 72
B. 80
C. 96
D. 100
E. None of these

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Answer: Option D

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17 . A school district has 1,989 computers, which is approximately one computer for every 68.6 students. Of the following, which is the closest approximation, in thousands, of the number of students in the school district?

A. 300
B. 120
C. 140
D. 160
E. 200

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Answer: Option C

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18 . All 120 students in a class play cricket or football or both, 75 play cricket and 60 play football. How many students play both?

A. 13
B. 15
C. 20
D. 25

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Answer: Option B

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19 . In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is two-third of the number of students of 8 years of age which is 48. what is the total number of students in the school?

A. 72
B. 60
C. 80
D. 100
E. None of these

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Answer: Option D

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20 . 2700 chocolates were distributed among the students of a class. If each students got 3 times as many chocolates as the number of students in the class, find the number of students in the class.

A. 30
B. 45
C. 60
D. 90

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Answer: Option A

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21 . f(x)=x2+1/(x-1) - 1 হলে, কোনটি সঠিক ?

A. f(0)=&
B. f(1)= -1
C. f(1)= 1
D. f(-1)= -1/2

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Answer: Option D

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22 . $\frac{x - 2}{x - 1} + \frac{1}{x - 1} - 2 = 0$ এর সমাধান সেট কোনটি?

A. { ∅ }
B. {1}
C. {-1}
D. {2}

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Answer: Option A

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A. 400
B. 2050
C. 3040
D. 4060

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Answer: Option D

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উত্তরা ব্যাংক | অ্যাসিস্ট্যান্ট অফিসার | 23-07-2022

24 . যদি $A = \{1, 2\}$ এবং $B = \{2, 5\}$ হয়, তবে $P = (A) \cap P (B) = ?$

A. $\{1, 5\}$
B. $\{2\}$
C. $\{\emptyset, (2)\}$
D. $\{\emptyset\}$

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Answer: Option C

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বিভিন্ন মন্ত্রণালয়/বিভাগ/অধিদপ্তর | ব্যক্তিকর্তা | ৩১.০১.২০১৮

A. {2,3}
B. {5}
C. {1}
D. {3,5}

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Answer: Option C

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প্রবাসী কল্যাণ ও বৈদেশিক কর্মসংস্থান মন্ত্রণালয়ের অধীন জনশক্তি-কর্মসংস্থান ও প্রশিক্ষণ ব্যুরোর ইন্সট্রাক্টর (ইলেকট্রিক্যাল-কম্পিউটার-সিভিল-ও ইলেকক্ট্রনিক্স) টিটিসি | ১২.০১.২০১৮

26 . $x^{2} - (p + q) x + p q = 0$ এর সমাধান সেট কোনটি?

A. $\{p, q\}$
B. $\{p, - q\}$
C. $\{- p, - q\}$
D. $\{- p, + q\}$

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Answer: Option A

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জনপ্রশাসন মন্ত্রণালয় || সহকারী পরিচালক (18-03-2016)

27 . $R = {x : x, 4$ এর গুণিতক এবং $x \leq 16}$ সেটটির তালিকায় প্রকাশিত রুপ কোনটি?

A. $\{1, 2, 4\}$
B. $\{4, 8, 12\}$
C. $\{0, 4, 8, 12, 16\}$
D. $\{4, 8, 12, 16\}$

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Answer: Option D

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পরিবার পরিকল্পনা অধিদপ্তর ।। সহকারী পরিবার পরিকল্পনা কর্মকর্তা (22-04-2016)

28 . $f (x) = x^{3} - 6 x^{3} + 11 x - 6$ হলে, f(x)= কত?

A. $3$
B. $2$
C. $1$
D. $0$

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Answer: Option D

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১১ তম শিক্ষক নিবন্ধন পরীক্ষা (স্কুল সমপর্যায়-২) (12-12-2014)

29 . $i f f (x) = 10^{x}, t h e n f^{- 1} (x) = ?$

A. $e^{x}$
B. Inx
C. $\log x$
D. $10 e^{x}$

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Answer: Option C

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বাংলাদেশ রপ্তানি প্রক্রিয়াকরণ কর্তৃপক্ষ (সহকারী ম্যানেজার) 02-04-2021 || 2021

30 . $f (x) = x^{2} - 5 x + 6$ এবং $f (x) = 0$ হলে x = কত ?

A. 2,3
B. -5,1
C. -2,3
D. 1,-5

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Answer: Option A

Explanation:

f(x) = x² - 5x + 6

এখন, f(x) = 0

∴ x² - 5x + 6 = 0

= > x² - 3x - 2x + 6 = 0

= > x(x - 3) - 2 (x - 3) = 0

= > (x - 3) (x - 2) = 0

∴ x = 2, 3

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কারিগরি ও মাদ্রাসা শিক্ষা বিভাগ (শিক্ষা মন্ত্রণালয়)- অফিস সহকারী কাম-কম্পিউটার মুদ্রাক্ষরিক 11-06-2021 || 2021

16 . In a class, 20% of the students are below 20 years of age. The number of students above 20 years of age is two-third of the number of students of 20 years of age which is 48. What is the total number of students in the class?

17 . A school district has 1,989 computers, which is approximately one computer for every 68.6 students. Of the following, which is the closest approximation, in thousands, of the number of students in the school district?

18 . All 120 students in a class play cricket or football or both, 75 play cricket and 60 play football. How many students play both?

19 . In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is two-third of the number of students of 8 years of age which is 48. what is the total number of students in the school?

20 . 2700 chocolates were distributed among the students of a class. If each students got 3 times as many chocolates as the number of students in the class, find the number of students in the class.

21 . f(x)=x2+1/(x-1) - 1 হলে, কোনটি সঠিক ?

23 . A class had 30 students. The class needs to select 3 represntatives.In how many ways can this be done?

25 . যদি A = {1,2,3}, B= {2,3,5} হয় A | B = কত?

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