256 . How many multiples of 7 are there between 100 and 150?

A. 7
B. 9
C. 16
D. 4

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Answer: Option A

Explanation:

7 multiples and those are 105,112,119,126,133,140,147

(ans)

সমন্বিত ৫ ব্যাংক | অফিসার ক্যাশ | 25-03-2022 ||

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

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Answer: Option B

Explanation:

Bangladesh Bank - Assistant Director - 2011

A. 1.5
B. 2
C. 2.5
D. 3
E. 3.5

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Answer: Option C

Explanation:

Here, Total Population = 1822195

and Total Household = 708644

People like each household = 1822195/708644 = 2.571 = 3 ( approximately)

Bangladesh Bank - Assistant Director - 2013 ||

A. 70
B. 72
C. 138
D. 139

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Answer: Option C

Explanation:

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A. nb
B. 2nb
C. 2(b + n)
D. 2b + n
E. none of these

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Answer: Option D

Explanation:

In 1 single chair seated 1 Man

So, in n single chair seated = 1 × n= n Man

again,

In 1 bench seated 2 Man

So, In b bench seated = 2 × b= 2b Man

So Total number of Man can be seated in this classroom is = 2b + n

Ans: 2b + n

261 . How many squares are there in a chess board if each player has got 16 pawns to play with ?

A. 64
B. 128
C. 204
D. 256
E. 552

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Answer: Option D

Explanation:

Normally a chess board has 8 pawns and its squares are 82 or 64.

If pawn are 16 the square become = 162 = 256

Bangladesh Bank - Assistant Director - 2011

A. Tk.13143
B. Tk.16349
C. Tk.12377
D. Tk.20000
E. Tk.15741

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Answer: Option E

Explanation:

FV=p×r(1+r)n−1

Where:

FV is the future value (Taka 1,00,000 in this case),
P is the annual payment (the amount you deposit every year),
r is the annual interest rate (expressed as a decimal, so 12%=0.12),
n is the number of periods (5 years in this case).
Plugging in the values:

1,00,000=P×0.12(1+0.12)5−1

1,00,000=P×0.12(1.12)5−1

Now, calculate (1.12)5:

(1.12)5≈1.76234

1,00,000=P×0.121.76234−1

1,00,000=P×0.120.76234

1,00,000=P×6.35283

Now, solve for P:

P=1,00,000/6.35283
P≈15,741.01

263 . If (x+y)=8 and (x-y)=6, what is the value of xy?

A. 7
B. 6
C. 1
D. 3

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Answer: Option A

Explanation:

দেয়া আছে , x + y = 8 , x - y = 6xy = (x + y2)2 - (x - y2)2 = (82)2 - (62)2 = 644 - 364 = 64 - 364 = 284 = 7

সমন্বিত ৮ ব্যাংক | অফিসার | 21-01-2022

A. 0.016
B. 1.60
C. 0.16
D. None of these

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Answer: Option A

Explanation:

265 . If 0 < a2 < b, which of the following statements is/are always true? i. a < b/a ii. a4 < a2b iii. a2/b < 1

A. i only
B. i and ii
C. ii and iii
D. i and iii
E. i, ii and iii

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Answer: Option C

Explanation:

266 . If 10 students scored 61, how many students scored more than or equal to 62?

A. 37
B. 47
C. 17
D. 27
E. None of them

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Answer: Option E

Explanation:

There is given a table of Mark distribution

35-48, 49-60, 61-75, 76-88, 89-100

No. Of students: 11, 25, 21, 9, 5

Solution :

Given that 10 students score 61, then rest (21-10)=11 students scores range 62 to 75.

Though 76 to 100 are more than 62, so we took the number of rest students.

So, total number of students who score 62 or more is (11+9+5)=25.

Our answer is 25.

267 . If 12 man work on a particular task. It takes them 24 days to complex it. On the other hand 12 women can complete the same task in 12 days. How many days would it take if the 12 man and 12 women complete with each othre to finish the same task?

A. 5 days
B. 6days
C. 8 days
D. 16 days

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Answer: Option C

Explanation:

জাতীয় নিরাপত্তা গোয়েন্দা সংস্থা-(NSI) Assistant Director- Research officer &amp- Assistant Programmer-০৮/১০/২০২১

A. 3:4
B. 4:3
C. 17:16
D. 16:17

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Answer: Option B

Explanation:

Here,

15% of A= 20% of B

15*B/100=20*B/100
A/B=20/15
A/B=4/3
A:B=4:3 (Ans)

সমন্বিত ৫ ব্যাংক | অফিসার ক্যাশ | 25-03-2022 ||

A. 360
B. 120
C. 240
D. 900

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Answer: Option C

Explanation:

ধরি, সংখ্যাটি x

∴ x এর 50% = 50x /100

আবার, 50x /100 x 15/100 = 18

⇒ 3x = 18 x 40

∴ x = (18 x 40)/3 = 240

সমন্বিত ৮ ব্যাংক | অফিসার | 21-01-2022

A. 36
B. 40
C. 81
D. 400

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Answer: Option D

Explanation:

Bangladesh Bank - Assistant Director - 2006

256 . How many multiples of 7 are there between 100 and 150?

257 . How many of the integers between 110 and 120 are prime numbers ?

258 . How many people approximately were there per household in Mirpur in 2000 ?

259 . How many positive integers less than ten thousand are multiples of both eight and eighteen.

260 . How many pupils can be seated in a room with N single chairs and B double seated benches?

261 . How many squares are there in a chess board if each player has got 16 pawns to play with ?

262 . How much should you deposit every year in a bank account to receive taka 100000 after 5 years if the annual interest rate is 12%?

263 . If (x+y)=8 and (x-y)=6, what is the value of xy?

264 . If 0.04 ×0.4 × a = 0.4 × 0.04 ×b, then the value of a/b is:

265 . If 0 < a2 < b, which of the following statements is/are always true? i. a < b/a ii. a4 < a2b iii. a2/b < 1

266 . If 10 students scored 61, how many students scored more than or equal to 62?

267 . If 12 man work on a particular task. It takes them 24 days to complex it. On the other hand 12 women can complete the same task in 12 days. How many days would it take if the 12 man and 12 women complete with each othre to finish the same task?

268 . If 15% of A is the same as 20% of B. then A: B is

269 . If 18 is 15% of 50% of a certain number, what is the number?

270 . If 18 is 15 percent of 30 percent of a certain number , what is the number?

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