571 . 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

View Answer	Favorite Question

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 ।

প্রিমিয়াম প্ল্যান: ১ মাস

99 ৳

৩০ দিনের জন্য সকল লাইভ এবং আর্কাইভ মডেল টেস্ট, প্রশ্ন ব্যাংক ও লেকচার শিট সহ অ্যাপ এর প্রিমিয়াম সব এক্সেস পাবেন।

সাবস্ক্রিপশন লিংক

572 . 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

View Answer	Favorite Question

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

573 . 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:

574 . 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

577 . 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

579 . 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:

581 . 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:

582 . 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:

583 . 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

584 . 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)

571 . 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?

572 . 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%?

573 . 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?

574 . 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 ?

575 . 169 is equal to

576 . 17th June was Sunday. What day of the week was on 10th November of the same year?

578 . 2% of 2=?

579 . 2, 5, 9, 19, 37, ?

580 . 2, 9, 6, 7, 18, 5, ....

581 . 2 bats and 2 balls cost Tk.300. 5 bats and 5 balls cost Tk.750. 3 bats and 3 balls cost--

582 . 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?

583 . 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?

584 . 2-[ 2 - { 2 - 2 ( 2 +2 ) } ] = ?

585 . 2-[2-{-2-2(2+2)}]=?

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