556 . 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 ।

557 . 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

558 . 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

View Answer	Favorite Question

Answer: Option A

Explanation:

559 . 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

View Answer	Favorite Question

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

View Answer	Favorite Question

Answer: Option B

Explanation:

169 - এর বর্গমূল 169 = 13.

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

A. Sunday
B. Saturday
C. Friday
D. None of these

View Answer	Favorite Question

Answer: Option B

Explanation:

One Bank Ltd || Special Cadre Officer (03-01-2025) || 2025

562 . 1f 9 is $\frac{3}{4}$ of n, what number is $\frac{5}{6}$ of n? ..

A. 12
B. 15
C. 10
D. 12.5

View Answer	Favorite Question

Answer: Option C

Explanation:

জনতা ব্যাংক || অফিসার (আরসি) (28-06-2024) || 2024

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

View Answer	Favorite Question

Answer: Option D

Explanation:

2 এর 2% = 2 এর 2/100 = 4/100 = 0.04

564 . 2, 5, 9, 19, 37, ?

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

View Answer	Favorite Question

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

View Answer	Favorite Question

Answer: Option C

Explanation:

566 . 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

View Answer	Favorite Question

Answer: Option B

Explanation:

567 . 2 cars leave a office at 12 noon, with one car traveling south at 60 mph and the other north at 40 mph along a straight road. At what time will they be 50 miles apart?

A. 2:30
B. 12:30
C. 3:30
D. 1:30

View Answer	Favorite Question

Answer: Option B

Explanation:

568 . 2 large and 1 small pumps can fill a water tank in 4 hours. One large and 3 small pumps can also fill the same water tank in 4 hours. how many hours will it take for 3 large and 4 small pumps to fill the tank?

A. 2 hours
B. 2.5 hours
C. 3 hours
D. 3.5 hours
E. None of these

View Answer	Favorite Question

Answer: Option A

Explanation:

Here, 2 large and 1 small pumps ≡ 1 large and 3 small pumps

Again, 3 large and 4 small pumps

= 2 large and 1 small pumps + 1 large and 3 small pumps

= 2 large and 1 small pumps + 2 large and 1 small pumps

= 2 x (2 large and 1 small pumps)

Now, 2 large and 1 small pumps can fill the tank in 4 hours

So, 2 x (2 large and 1 small pumps) can fill the tank = 4/2 = 2 hours

569 . 2-[ 2 - { 2 - 2 ( 2 +2 ) } ] = ?

A. -4
B. 6
C. 4
D. None of these

View Answer	Favorite Question

Answer: Option D

Explanation:

Bangladesh Bank - Officer(Cash) - 2016

A. 6
B. -4
C. 4
D. None of these

View Answer	Favorite Question

Answer: Option D

Explanation:

2-[2-1-2-2(2+2)}]

=2-[-1-(2×4)]

=2+9

=11

(ans)

556 . 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?

557 . 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%?

558 . 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?

559 . 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 ?

560 . 169 is equal to

561 . 17th June was Sunday. What day of the week was on 10th November of the same year?

563 . 2% of 2=?

564 . 2, 5, 9, 19, 37, ?

565 . 2, 9, 6, 7, 18, 5, ....

566 . 2 bats and 2 balls cost Tk.300. 5 bats and 5 balls cost Tk.750. 3 bats and 3 balls cost--

567 . 2 cars leave a office at 12 noon, with one car traveling south at 60 mph and the other north at 40 mph along a straight road. At what time will they be 50 miles apart?

568 . 2 large and 1 small pumps can fill a water tank in 4 hours. One large and 3 small pumps can also fill the same water tank in 4 hours. how many hours will it take for 3 large and 4 small pumps to fill the tank?

569 . 2-[ 2 - { 2 - 2 ( 2 +2 ) } ] = ?

570 . 2-[2-{-2-2(2+2)}]=?

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