526 . 100*10-100+2000/100=?

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

527 . 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)

528 . 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

529 . 12.1212 + 17.0005 - 9.1102 = ?

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

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Answer: Option C

Explanation:

530 . 12 students working for 5 hours a day can solve a certain number of problems in 8 days. How many students are needed to solve. Five times the original number of problems, if they work at 4 hours a day for 15 days?

A. 90
B. 45
C. 95
D. 40

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Answer: Option D

Explanation:

জনতা ও রূপালী ব্যাংক- অফিসার ১৩.১২.২০১৯

A. 14 years
B. 16 years
C. 18 years
D. 20 years
E. None of these

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Answer: Option B

Explanation:

Manick এর বর্তমান বয়স  =  12; Rahul  =  123123  = 4
ধরি, Manick x বছরে পরে হবে Rahul এর twice old.
তাহলে 12  +  x  =  2(4  +  x)
 x  =  4
তাহলে Manick এর required age  =  12  +  4  =  16 years.

532 . 120 students in a class play cricket or football or both. If 75 students play cricket and 60 students play football, how many play both?

A. 15
B. 16
C. 76
D. 38

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Answer: Option A

Explanation:

শুধু ক্রিকেট খেলে = 75 জন

এবং ফুটবল খেলে = 60 জন

ক্রিকেট ও ফুটবল খেলে = 75 + 60 = 135 জন

মোট ছাত্র 120 জন হলে তাদের মধ্যে উভয়টি খেলে = 135 - 120 = 15 জন ।

533 . 125 gallons of a mixture contains 20% water . What amount of additional water should be added such that the water content is raised to 25%?

A. 15/2 gallons
B. 17/2 gallons
C. 19/2 gallons
D. 19/2 gallons
E. 8 13 gallons

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Answer: Option D

Explanation:

20% of 125 gal = 0.20 × 125 gallon = 25 gal water

Lets add w gal water such that the water content is raised to 25%

so, 25 + w = 0.25 (o 125 + w)

25 + w = 31.25 + . 25w

w - 0.25w = 31.25 - 25

0.75 w = 6.25

w = 8.33 বা 8 1/3

534 . 15% monthly salary increase resulted in a Tk.14400 per year increase in salary for an employee. What was his monthly salary before the increase?

A. Tk.8000
B. Tk.9000
C. Tk.5000
D. Tk.12000

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Answer: Option A

Explanation:

535 . 15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take , if 3 women do as much work as 2 men ?

A. 18
B. 20
C. 25
D. 30

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Answer: Option D

Explanation:

3 women can do as much work as 2 men

∴ efficiency of women to do a piece of work, e2 = (1/3)

∴ efficiency of men to do a piece of work, e1 = (1/2)

We know,

Total work done = (no. of men or women) * (no. of days) * (no. of hours) * (efficiency)

Therefore,

m1 * d1 * h1 * e1 = m2 * d2 * h2 * e2

or, 15 * 21 * 8 * (1/2) = 21 * d2 * 6 * (1/3)

or, d2 = 30 days .

Bangladesh Bank - Assistant Director - 2016

A. 11
B. 13
C. 15
D. 17

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Answer: Option B

Explanation:

169 - এর বর্গমূল 169 = 13.

৩৪ তম বিসিএস প্রিলিমিনারি টেস্ট (24-05-2013)

A. 0.0004
B. 0.4
C. 0.02
D. 0.04

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Answer: Option D

Explanation:

2 এর 2% = 2 এর 2/100 = 4/100 = 0.04

538 . 2, 5, 9, 19, 37, ?

A. 75
B. 76
C. 78
D. 73

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Answer: Option A

Explanation:

2 5 9 19 37 ?,

Here,

2*2 + 1 = 5,

5*2 - 1 = 9,

9*2 + 1 = 19,

19*2 - 1 = 37,

37*2 + 1 = 75.

So the answer would be 75

Bangladesh Bank - Officer(Cash) - 2016

A. 25
B. 40
C. 54
D. 90

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Answer: Option C

Explanation:

540 . 2 bats and 2 balls cost Tk.300. 5 bats and 5 balls cost Tk.750. 3 bats and 3 balls cost--

A. Tk.400
B. Tk.450
C. Tk.500
D. Tk.550

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Answer: Option B

Explanation:

526 . 100*10-100+2000/100=?

527 . 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 :

528 . 100×10-100+2000÷100=?

529 . 12.1212 + 17.0005 - 9.1102 = ?

530 . 12 students working for 5 hours a day can solve a certain number of problems in 8 days. How many students are needed to solve. Five times the original number of problems, if they work at 4 hours a day for 15 days?

531 . 12 year old Manick is three times as old as his brother Rahul. How old will Manick be when he is twice as old as Rahul?

532 . 120 students in a class play cricket or football or both. If 75 students play cricket and 60 students play football, how many play both?

533 . 125 gallons of a mixture contains 20% water . What amount of additional water should be added such that the water content is raised to 25%?

534 . 15% monthly salary increase resulted in a Tk.14400 per year increase in salary for an employee. What was his monthly salary before the increase?

535 . 15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take , if 3 women do as much work as 2 men ?

536 . 169 is equal to

537 . 2% of 2=?

538 . 2, 5, 9, 19, 37, ?

539 . 2, 9, 6, 7, 18, 5, ....

540 . 2 bats and 2 balls cost Tk.300. 5 bats and 5 balls cost Tk.750. 3 bats and 3 balls cost--

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