2161 . If the length of rectangle B and the width of rectangle A is one-half the width of rectangle B, what is the ratio of the area of rectangle A to the area of rectangle B?

A. 1/4
B. 1/2
C. 1/1
D. 2/1

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Answer: Option D

Explanation:

Let length of rectangle B be L and width be H
So, for rectangle A, length = L/2 and width = H/2

So, area of A/area of B = (L/2*H/2)/L*H = 1/4.

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Bangladesh bank - officer ( general) - 27.04.2018

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2162 . If the length of rectangle is increased by 30% and the width is decreased by 30%, then the area will be

A. Decreased by 9%
B. Increased by 9%
C. Decreased by 18%
D. Increased by 16%

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Answer: Option A

Explanation:

Short Cut Formula

A + B + AB/100 = 30 - 30 + 30*( - 30)/100 = - 9.

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Bangladesh Bank - Assistant Director - 2010

2163 . If the line AB and CD meet at O and $∠ B O S = 60 °,$ then $∠ B O C = ?$

A. $27 °$
B. $63 °$
C. $117 °$
D. $297 °$

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Answer: Option C

Explanation:

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অফিসার (জেনারেল) - 12.11.2021

A. 125
B. 25
C. 5
D. 250
E. 12.50

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Answer: Option B

Explanation:

SP of 5 units = 25×5 = 125 tk

[SP = Revenue]

Average = 125/5 = 25

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Sonali- Janata &amp- Agrani Bank Offier (Cash Recruitment) 22.02.2008

A. 58
B. 390
C. 78
D. 310

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Answer: Option C

Explanation:

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First Security Islami Bank Ltd | Probationary Officer | 19-02-2021

A. U , W and Z
B. V, X and Z
C. X, y and Z
D. V , W and Z

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Answer: Option D

Explanation:

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2167 . If the nth terms of an arithmetic progression is 4n+1, then the common difference is-

A. 4
B. 3
C. 5
D. 6

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Answer: Option A

Explanation:

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সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান || অফিসার (জেনারেল) (08-03-2024)

A. 3
B. 6
C. 7
D. 2

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Answer: Option D

Explanation:

প্রশ্নে উল্লেখিত (*) এর স্থানে একমাত্র 2 বসালেই সংখ্যাটি হবে ( 522) যা দ্বারা বিভাজ্য হয়।

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Bangladesh Bank - Officer(Cash) - 2016

A. 1
B. 2
C. 3
D. 4

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Answer: Option C

Explanation:

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Bangladesh Bank - Assistant Director - 2014

A. 12/17
B. 10/16
C. 12/19
D. 9/11

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Answer: Option C

Explanation:

(x + 150% of x)/(y + 200% of y) = 10/19
2.5x/3y = 10/19
x/y = 10 × 3/19 × 2.5 = 12/19. Ans: C

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

A. 5/9
B. 5/8
C. 7/12
D. 11/12

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Answer: Option B

Explanation:

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Two Combined Bank Recruitment Test Post: Officer - 28/09/2018

B. -1
C. 4
D. 1
E. None of these

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Answer: Option D

Explanation:

2^a = a^3

2 × 2 + a = 2a + 3

a = 4 - 3 = 1.

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Bangladesh Bank - Assistant Director - 2009

B. 1
C. -1
D. 4

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Answer: Option B

Explanation:

2^a = a^3

2 × 2 + a = 2a + 3

a = 4 - 3 = 1

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2174 . If the perimeter of a rectangular garden plot is 34 feet and its area is 60 square feet, what is the length of each of the longer sides?

A. 5 feet
B. 6 feet
C. 10 feet
D. 12 feet

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Answer: Option D

Explanation:

Let the length be L and Breadth be B. Given Perimeter 2(L + B) = 34 - - - - - > Thus L + B = 17 LB = 60 - - - - - - > We can solve the equation but the best way will be to plugin. Note that A and B can be ruled out because the other side will be smaller. So the options are between C and D. Let L be 10 Ft then B = 7 ft and Area is 70 which is not true Let L be 12ft then B = 5 ft and Area is 60 - - - - - > Bingo...what we need.

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2175 . If the population of a certain country increases at the rate of one person every 15 seconds, by how many persons does the population increase in 20 minutes?

A. 80
B. 100
C. 150
D. 240

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Answer: Option A

Explanation:

Population increased in 15 sec = 1

Population increased in 60 sec or 1 min = 1×4 = 4

Population increased in 20 min = 4×20 = 80

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2161 . If the length of rectangle B and the width of rectangle A is one-half the width of rectangle B, what is the ratio of the area of rectangle A to the area of rectangle B?

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2162 . If the length of rectangle is increased by 30% and the width is decreased by 30%, then the area will be

2164 . If the market price is Tk. 25, the average revenue of selling five units in Taka is :

2165 . If the mean of numbers 28, x, 42, 78 and 104 is 62, what is the mean of 48,62,98,124 and x?

2166 . If the members of the Public service Commission are V ,W and Z , and If the Rent control Commission is to have as many members in common with the Public Service Commission as the rules allow , the Rent Control Commission must consist of __

2167 . If the nth terms of an arithmetic progression is 4n+1, then the common difference is-

2168 . If the number 5 * 2 is divisible by 6, then * = ?

2169 . If the number 91876 * 2 is completely divisible by 8, then the smallest whole number in place of will be:

2170 . If the numerator of a fraction is increased by 150% and the denominator of a fraction increased by 200% fraction becomes 10/19. Find the fraction.

2171 . If the numerator of fraction is increased by 200% and the denominator is increased by 350% The resultant fraction is 5/12. What was the original fraction?

2172 . If the operation ^ is defined by the equation x ^ y = 2x + y, what is the value of a in 2 ^ a = a ^ 3 ?

2173 . If the operation ^ is defined by the equation x ^ y = 2x + y, what is the value of a in 2 ^ a = a ^ 3?

2174 . If the perimeter of a rectangular garden plot is 34 feet and its area is 60 square feet, what is the length of each of the longer sides?

2175 . If the population of a certain country increases at the rate of one person every 15 seconds, by how many persons does the population increase in 20 minutes?

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