3616 . What is probability than an integer selected at random from those between 20 ans 100 inclusive is a multiple of 15?

A. 5/79
B. 2/27
C. 5/81
D. 6/79

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Answer: Option C

Explanation:

To find the probability that an integer selected at random from those between 20 and 100 inclusive is a multiple of 15, we first need to count the number of multiples of 15 in that range and then divide it by the total number of integers in that range.

Step 1: Find the number of multiples of 15 between 20 and 100.

The first multiple of 15 in that range is 15 itself. The last multiple of 15 in that range is 90.

So, we need to count how many multiples of 15 are there between 15 and 90.

Using the formula for counting multiples in a range:

Number of multiples = (Last multiple - First multiple) / Common multiple

Number of multiples = (90 - 15) / 15 = 75 / 15 = 5

There are 5 multiples of 15 between 20 and 100.

Step 2: Find the total number of integers between 20 and 100.

To find the total number of integers in that range, we subtract the lower bound (20) from the upper bound (100) and add 1.

Total number of integers = 100 - 20 + 1 = 81

Now, we can calculate the probability:

Probability = (Number of favorable outcomes) / (Total number of outcomes)

Probability = (Number of multiples of 15) / (Total number of integers) = 5 / 81

So, the probability that an integer selected at random from those between 20 and 100 inclusive is a multiple of 15 is 5/81.

সমন্বিত ৭ ব্যাংক ও ১টি আর্থিক | সিনিয়র_অফিসার | 27-11-2021

A. TK. 700
B. Tk. 800
C. Tk. 650
D. cannot be determined

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Answer: Option D

Explanation:

As short - cut of installment for 2 installments is given by
Installment = P/{(100/100 + R) + (100/100 + R)2}
There is the need of rate (R) which is unavailable in the question.
So, we cannot determine the answer.

সমন্বিত ৬ (ব্যাংক) ও ২ টি আর্থিক প্রতিষ্ঠান - সিনিয়র অফিসার ১০.০৬.২০১৯

A. Tk. 62.50
B. Tk. 46.875
C. Tk. 83.33
D. none of these

View Answer	Favorite Question

Answer: Option B

Explanation:

I=pnr

=500×¾×(12.5/100)

=46.875 taka

(ans)

3619 . What is the annual interest rate on an account that carns Tk. 948 in simple interest over 36 months with an initial deposit of Tk. 7900?

A. 40%
B. 4%
C. 3%
D. 3.3%

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Answer: Option B

Explanation:

I = P*n* r

n = 36months = 3 years

r = ?

Here, 948 = 7900 * 3 * r

r = 4 %

সহকারী পরিচালক(AD) -12.11.2021

A. 10
B. 100
C. 200
D. None of these

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Answer: Option B

Explanation:

Side of the square = 40 / 4 = 10 m [ Perimeter of square = 4 x side length]

So, area of the square = 10² = 100 m²

3621 . What is the area of a circle with aradious of 7 meters?

A. 154 sq. meters
B. 160 sq. meters
C. 185 sq. meters
D. 162 sq. meters

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Answer: Option A

Explanation:

3622 . What is the area of a square ( in Sq. meter) if its perimeter is 40 meter ?

A. 10
B. 100
C. 200
D. None of these

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Answer: Option B

Explanation:

If perimeter of a square is 40,

it's length is 40/4 = 10

so it's area is 102 = 100

Bangladesh Bank - Officer - 2001

A. 10
B. 100
C. 200
D. None of these

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Answer: Option B

Explanation:

3624 . What is the area of a square in square meter if its perimeter is 80?

A. 220
B. 300
C. 400
D. 600
E. None of them

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Answer: Option C

Explanation:

square has all 4 side equal so each side = perimeter/4 = 80/4 = 20 cm

when each side is 20cm then area of square is = side*side = 20*20 = 400 SQ cm

Answer: Area Of Square is = 400 SQ cm

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

A. 50
B. 50.5
C. 51
D. 51.5

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Answer: Option B

Explanation:

Arithmetic Mean = (Sum of Numbers) / (Number of Numbers)

In this case, the sum of the first 100 natural numbers can be found using the formula for the sum of an arithmetic series:

Sum = (n/2) * [2a + (n-1)d]

Where: n = Number of terms a = First term d = Common difference

For the first 100 natural numbers: n = 100 a = 1 (first natural number) d = 1 (common difference between natural numbers)

Now, plug these values into the formula:

Sum = (100/2) * [2(1) + (100-1)(1)] Sum = (50) * [2 + 99] Sum = 50 * 101 Sum = 5050

Now that you have the sum of the first 100 natural numbers, you can find the arithmetic mean:

Arithmetic Mean = (Sum of Numbers) / (Number of Numbers) Arithmetic Mean = 5050 / 100 Arithmetic Mean = 50.5

So, the arithmetic mean of the first 100 natural numbers is 50.5.

সমন্বিত ৭ ব্যাংক || সিনিয়র অফিসার-05-11-2021 ||

A. 180
B. 185
C. 200
D. 205
E. 210

View Answer	Favorite Question

Answer: Option D

Explanation:

Probationary Officer | 31.03.2017 ||

A. 190
B. 195
C. 200
D. 205

View Answer	Favorite Question

Answer: Option D

Explanation:

তিতাস গ্যাস ট্রান্সমিশন এন্ড ডিষ্ট্রিবিউশন কোম্পানী লি. | সহকারী ব্যবস্থাপক (অ্যাকাউন্টস) | ২৭.০৪.২০১৮

A. 39
B. 41
C. 45
D. 47

View Answer	Favorite Question

Answer: Option B

Explanation:

First Security Islami Bank Ltd | Probationary Officer | 19-02-2021

A. 1
B. 2
C. 2.5
D. 10

View Answer	Favorite Question

Answer: Option B

Explanation:

0.36 + 4.6 + 0.64 + 2.4 = 8

= 8/4

= 2

চারটি সংখ্যার যোগফল ৮ এবং চারটি সংখ্যার কারণে ৪ দিয়া ভাগ হবে।

3630 . What is the average of odd numbers from 1 to 40?

A. 20
B. 21
C. 31
D. 41

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Answer: Option A

Explanation:

Janata Bank PLC || Officer (Rural Credit) (27-10-2023) || 2023

3616 . What is probability than an integer selected at random from those between 20 ans 100 inclusive is a multiple of 15?

3617 . What is the amount of equal installment , if a sum of TK. 1428 due 2 years hence has to be completely has to be completely repaid in 2 equal annual installments starting next year?

3618 . What is the amount of interest on Tk. 500 invested for nine months at the rate of 12.5% per annum ?

3619 . What is the annual interest rate on an account that carns Tk. 948 in simple interest over 36 months with an initial deposit of Tk. 7900?

3620 . What is the are a of a square (in sq. meter) if its perimeter is 40 meter ?

3621 . What is the area of a circle with aradious of 7 meters?

3622 . What is the area of a square ( in Sq. meter) if its perimeter is 40 meter ?

3623 . What is the area of a square (in sq. meter) if its perimeter is 40 meter?

3624 . What is the area of a square in square meter if its perimeter is 80?

3625 . What is the arithmetic mean of the first 100 natural numbers?

3626 . What is the average (arithmatic mean) of

3627 . What is the average (arithmetic mean) of all multiples of 10 from 10 to 400 inclusive?

3628 . What is the average (arithmetic mean) of the values 39,40,39,45,42,35,47

3629 . What is the average of 0.36, 4.6, 0.64 and 2.4?

3630 . What is the average of odd numbers from 1 to 40?

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