556 . 1 + 2 + 3 + .................. + 100 = ?

A. 5000
B. 5055
C. 5550
D. 5050

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Answer: Option D

Explanation:

এখানে, মোট পদ n = 100

∴ সমষ্টি S = n(n + 1)/2

= 100(100 + 1)/2

= (100×101)/2

= 5050

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Sonali- Janata- Agrani &amp- Rupali Bank Ltd. Senior Officer Recruitment 14.03.2008

A. 15
B. 21
C. 26
D. 31

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Answer: Option B

Explanation:

1 + 1 = 2

1 + 2 = 3

2 + 3 = 5

3 + 5 = 8

5 + 8 = 13

8 + 13 = 21

So, the next number in the series should be 21.

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558 . 1 MHz=

A. $10^{3} H z$
B. $10^{4} H z$
C. $10^{5}$
D. $10^{6}$

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Answer: Option D

Explanation:

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Bangladesh Bank - Assistant Director - 2015

A. 0.12
B. 0.13
C. 3.6
D. 0.36
E. 0.036

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Answer: Option E

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Bangladesh Bank - Officer(Cash) - 2011

A. 100
B. 150
C. 175
D. None of these

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Answer: Option B

Explanation:

10% of 3000 - 5% of 3000

= (10*3000)/100 - (5*3000)/100

= 300 - 150

= 150

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Bangladesh Bank - Assistant Director - 2001

A. 8%
B. 5%
C. 10%
D. 20%

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Answer: Option D

Explanation:

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562 . 10 man, working 6 hours a day can complete a work in 18 days. How many hours a day must 15 men work to complete the same work in 12 days ?

A. 6
B. 10
C. 12
D. 15

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Answer: Option A

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563 . 10 men can survive for 24 days on 15 cans of food. How many total cans are needed for 8 men survive 36 days?

A. 15
B. 16
C. 17
D. 18
E. None of these

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Answer: Option D

Explanation:

10 men can servive 24 days on 15 cans

10 men can servive 1 days on 15/24 cans

10 men can survive 36 days on ( 15×36)/24

1 men can survive 36 days on ( 15×36)/(24×10) cans

8 men can survive 36 days on = (15×36×8)/(24×10) = 18

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564 . 10 men survive 24 days on 15 cans of food. How many cans needed for 8 men to survive 36 days?

A. 15
B. 16
C. 17
D. 18

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Answer: Option D

Explanation:

10 men can servive 24 days on 15 cans

10 men can servive 1 days on 15/24 cans

10 men can survive 36 days on ( 15×36)/24

1 men can survive 36 days on ( 15×36)/(24×10) cans

8 men can survive 36 days on = (15×36×8)/(24×10) = 18

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565 . 10 minutes after a plane leaves the airport, it is reported to be 40 miles away. What is the average speed in miles per hour of the plane?

A. 560
B. 400
C. 240
D. 200

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Answer: Option C

Explanation:

Hints:

Average speed = 40 miles /10 min = 40 miles /(10/60) hrs = (40× 60)/ 10 mph = 240 mph.

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সমন্বিত ব্যাংক অফিসার (ক্যাশ) || (02-06-2023)

A. 84
B. 80
C. 96
D. 98

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Answer: Option C

Explanation:

10%of 4800=480,

8%of 4800= 384,

So,(480-384)=96.

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Bangladesh Bank - Assistant Director - 2008

A. 29
B. 780
C. 979
D. 920

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Answer: Option D

Explanation:

Hints: y is 10% more than 125

So, y = 125 + 10% of 125

= 125 + 10/100 × 125

= 125 + 12.5

= 137.5

x is 10% less than y

x = 137.5 - 10% of 137.5

= 137.5 - ( 10/100 × 137.5)

= 137.5 - 13.75

= 123.75

x = 123.75

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568 . 100 oranges are bought at the rate of Tk. 350 and sold at the rate Tk. 48 per dozen. The percentage of profit or loss is :

A. 14.29% gain
B. 14.29% loss
C. 15% gain
D. 15% gain

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Answer: Option A

Explanation:

100 oranges cost 350tk

So, 1 orange costs (350/100)=3.5 tk

12 oranges selling for 48 tk

So, 1 orange selling for (48/12)=4 taka

Profit in 3.5 taka=(4-3.5)=0.5 taka

So, profit in 350 taka=(350×0.5)/3.5=50 taka

Now, (50×100)/300=14.29%

(ans)

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569 . 100×10-100+2000÷100=?

A. 29
B. 780
C. 920
D. 979

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Answer: Option C

Explanation:

100 × 10 - 100+ 2000 ÷ 100

= 1000 - 100 + 20

= 1000- 80

= 920

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পূবালী ব্যাংক লিমিটেড || জুনিয়র অফিসার (30-09-2023) || 2023

A. 20.0105
B. 20.1015
C. 20.0115
D. 20.0015

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Answer: Option C

Explanation:

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পূবালী ব্যাংক লিমিটেড || জুনিয়র অফিসার (30-09-2023) || 2023

556 . 1 + 2 + 3 + .................. + 100 = ?

557 . 1-1-2-3-5-8-13 what number should come next in the series?

559 . 1/5 of 30% of 0.60 = ?

560 . 10% of 3000 is how much more than 5% of 3000 ?

561 . 10% of 80 is equal to what percentage of 40?

562 . 10 man, working 6 hours a day can complete a work in 18 days. How many hours a day must 15 men work to complete the same work in 12 days ?

563 . 10 men can survive for 24 days on 15 cans of food. How many total cans are needed for 8 men survive 36 days?

564 . 10 men survive 24 days on 15 cans of food. How many cans needed for 8 men to survive 36 days?

565 . 10 minutes after a plane leaves the airport, it is reported to be 40 miles away. What is the average speed in miles per hour of the plane?

566 . 10 percent of 4800 is how much more than 8% of 4800?

567 . 100*10-100+2000/100=?

568 . 100 oranges are bought at the rate of Tk. 350 and sold at the rate Tk. 48 per dozen. The percentage of profit or loss is :

569 . 100×10-100+2000÷100=?

570 . 12.1212 + 17.0005 - 9.1102 = ?

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