1171 . A store raised the price of an item by exactly 10 percent. Which of the following could not be the resulting price of the item in taka?

A. 5.50
B. 7.60
C. 11.00
D. 12.10

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Answer: Option B

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1172 . A student answers 69 questions in an exam. He makes twice as many mistakes as he makes correct answers. How many questions did he get right? (একটি পরীক্ষায় একজন শিক্ষার্থী ৬৯টি প্রশ্নের উত্তর দেয়। সে যতটি প্রশ্নের সঠিক উত্তর দেয় তার চেয়ে দ্বিগুণ ভুল করেন। সে কতটি প্রশ্নের উত্তর সঠিক করতে পেরেছিল?)

A. 23
B. 26
C. 34
D. 46

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Answer: Option A

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Dutch Bangla Bank || Sales Manager (18-09-2024) || 2024

A. 40
B. 50
C. 75
D. 100

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Answer: Option B

Explanation:

Suppose, Total marks = 100

20% reduced = 80

Then, 20% increased = 80 + 80 of 20% = 96

Difference = 100 - 96 = 4

4 difference then orginal number = 100

8 difference then orginal number = (100×8)/4

= 200

20% increased = 96%

Difference between two new number= 96-80 = 16

Difference is 16 when the original number is 100

,, ,, 8 ,, ,, = 50

Answer : 50

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1174 . A student is to answer 10 out of 13 questions in an examination such that he must choose at least 4 from the first five questions. The number of choices available to him is.

A. 140
B. 196
C. 280
D. 346

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Answer: Option B

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Officer (General) |-Sonali | Janata | Bangladesh Krishi_Bangladesh Development bank ২৪.০৫.২০১৯

A. 33
B. 31
C. 27
D. 37

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Answer: Option A

Explanation:

ধরি, সঠিক উত্তর দেওয়ার প্রশ্ন সংখ্যা x
⸫ 2x – (60 – x) × 1 = 39
⇒ 2x – 60 + x = 39
⇒ 3x = 99 ⸫ x = 33

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Bangladesh Bank - Assistant Director - 2015

A. 27
B. 31
C. 33
D. 37

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Answer: Option C

Explanation:

ধরি, সঠিক উত্তর দেওয়ার প্রশ্ন সংখ্যা x
⸫ 2x – (60 – x) × 1 = 39
⇒ 2x – 60 + x = 39
⇒ 3x = 99

⸫ x = 33

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1177 . A student makes twice as many mistake as he makes correct answer in an exam. For each wrong answer $\frac{1}{4}$ is deducted from his score. If he scores 20 in the exam, how many questions did he attempt in the exam? (একজন শিক্ষার্থী পরীক্ষায় সঠিক উত্তরের চেয়ে দ্বিগুণ ভুল করে। তার স্কোর থেকে প্রতিটি ভুল উত্তরের জন্য $\frac{১}{৪}$ কাটা হয়। যদি সে পরীক্ষায় ২০ নম্বর পায়, তাহলে সে পরীক্ষায় কতটি প্রশ্নের উত্তর করেছিল?)

A. 60
B. 120
C. 180
D. 200

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Answer: Option B

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Dutch Bangla Bank || Sales Manager (18-09-2024) || 2024

A. 34%
B. 44%
C. 54%
D. 64%

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Answer: Option D

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উত্তরা ব্যাংক | অ্যাসিস্ট্যান্ট অফিসার | 23-07-2022

A. 57
B. 76
C. 77
D. 78

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Answer: Option C

Explanation:

2nd Test's Marks = 2x82 - 80 = 84
3rd Test's Marks = 3x78 - 2x2 = 234 - 164 = 70
The average of his 2nd and 3rd tests' marks = (84 + 70)/2 = 154/2 = 77.

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Bangladesh Bank - Assistant Director - 2001

A. 44
B. 45
C. 66
D. 77

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Answer: Option C

Explanation:

Calculate the total marks for all 8 papers, assuming each paper is out of 100 marks: Total Marks = 8 papers * 100 marks/paper = 800 marks

Calculate 55% of the total marks to find the student's overall score: Overall Score = 55% of Total Marks Overall Score = (55/100) * 800 = 0.55 * 800 = 440 marks

Calculate the marks scored in English, which is 15% of the total marks scored in all 8 papers: Marks in English = 15% of Overall Score Marks in English = (15/100) * 440 = 0.15 * 440 = 66 marks

So, the student scored 66 marks in English.

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সমন্বিত পাঁচ ব্যাংক || অফিসার ক্যাশ - 06.11.2021

1181 . A student walks from his house at a speed of $2 \frac{1}{2}$ K per hour and reaches his school 6 minutes late. The next day he increases his speed by 1 km per hour and reaches 6 minutes before school time. How far is the school from his house?

A. $1 \frac{1}{4} k m$
B. $1 \frac{3}{4} k m$
C. $2 \frac{1}{4} k m$
D. $2 \frac{3}{4} k m$

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Answer: Option B

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Janata Bank PLC || Officer (Rural Credit) (27-10-2023) || 2023

A. 7
B. 17
C. 31
D. 3

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Answer: Option A

Explanation:

(3 + 11 + 7 + 9 + 15 + 13 + 8 + 19 + 17 + 21 + 14 + x)/12 = 12

137 + x /12 = 12

x = 144 - 137

x = 7

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Bangladesh Bank - Officer(Cash) - 2016

A. 7
B. 3
C. 17
D. 31

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Answer: Option A

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1184 . A student who secures 20% marks in an examination fails by 30 marks another student secures 32% marks gets 42 marks more than those required to pass. The percentage of marks required to pass is--

A. 28%
B. 30%
C. 20%
D. 25%

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Answer: Option D

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1185 . A sum fetches a simle interest of tk.6000 at the rate of 5% pa.in 6years. what would be the compound interest earned at the same rate of interest and the same principal in 2 years?

A. tk.2050
B. tk.2500
C. tk.2125
D. tk.2245

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Answer: Option A

Explanation:

The sum = Tk. (6000 × 100)/(5 × 6) = Tk. 20000
Compound Interest = (20000 × 105/100 × 105/100) – 20000 = Tk. 2050. Ans: A

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অফিসার (ক্যাশ) নিয়োগ পরীক্ষা- ১২-১০-২০১৮ ||

1171 . A store raised the price of an item by exactly 10 percent. Which of the following could not be the resulting price of the item in taka?

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1173 . A student first reduced a number by 20 percent and then increased it again by 20 percent. If the difference between the two new numbers was 8, then what is the original number?

1174 . A student is to answer 10 out of 13 questions in an examination such that he must choose at least 4 from the first five questions. The number of choices available to him is.

1175 . A student loses 1 mark for every wrong answer and scores 2 marks for every correct answer . If he answers all the 60 questions in an exam and scores 39 marks , how many of them were correct ?

1176 . A student loses I mark for every wrong answer and scores 2 marks for every correct answer . If he answers all the 60 questions in an exam and scores 39 marks , how many of them were correct?

1178 . A student multiplied a number by 3/5 insted of 5/3. What is the percentage of error in the calculation?

1179 . A student scored 80 marks in his first test. After taking the third test, his average dropped from 82 to78 . What is the average of his 2nd and 3rd tests ?

1180 . A student scores 55% marks in 8 papers of 100 marks each. He scores 15% of his total marks in English. How much does he score in English?

1182 . A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14, and x. He found the mean to be 12. What should be the number in place of x ?

1183 . A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and p. He found the mean to be 12. What should be the number in place of p?

1184 . A student who secures 20% marks in an examination fails by 30 marks another student secures 32% marks gets 42 marks more than those required to pass. The percentage of marks required to pass is--

1185 . A sum fetches a simle interest of tk.6000 at the rate of 5% pa.in 6years. what would be the compound interest earned at the same rate of interest and the same principal in 2 years?

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