376 . Sum of 4 consecutive even numbers is greater than consecutive odd numbers by 81. If the sum of the least odd and even numbers is 59 then find the sum of largest odd and even numbers.

A. 69
B. 53
C. 65
D. 72

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Answer: Option A

Explanation:

Let 4 consecutive even numbers be x, x + 2, X + 4 and x + 6 respectively.
3 consecutive odd numbers be y, y + 2 and y + 4
According to question,
[x + x + 2 + x + 4 + x + 6]−[y + y + 2 + y + 4] = 81
= > (4x + 12)−(3y + 6) = 81
4x−3y = 81−12 + 6
4x−3y = 75
x + 4 = 59
On solving equations (i) and (ii), we get
X = 36
y = 23
The sum of largest odd and even number = x + 6 + y + 4 = x + y + 10 = 36 + 23 + 10 = 69

Officer (General) -Ansar VDP Unnayan | BD House Building Finance Corporation 28.09.2018

A. 240
B. 180
C. 360
D. 270

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Answer: Option C

Explanation:

সামান্তরিক একট চতুর্ভুজ । আর যেকোনো চতুর্ভজের 4টি অন্ত:কোণের সমষ্টি 360 ডিগ্রি

সমন্বিত ৮ ব্যাংক | অফিসার | 21-01-2022

A. 4
B. 20
C. 30
D. 40

View Answer	Favorite Question

Answer: Option D

Explanation:

40 isn't a factor of 180.so it's answer

সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. 179
B. 78
C. 89
D. 72
E. 71

View Answer	Favorite Question

Answer: Option E

Explanation:

380 . The amount of time that three secretaries worked on a special project are in the ratio of 1 to 2 to 5. If they worked a combined total of 112 hours, how many hours did the secretary, who worked the longest spend on the project?

A. 80
B. 70
C. 56
D. 16

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Answer: Option B

Explanation:

Sum of ratio = 1+2+5 = 8

So, the hours done by longest spend on the project = (112*5)/8

= 70 (Ans)

সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. 2 cm
B. 3 cm
C. 4 cm
D. 5 cm

View Answer	Favorite Question

Answer: Option A

Explanation:

x + 2x + 3x = 180 degrees

6x = 180

x = 180/6

x = 30 degrees

The right triangle has vertices A, B, and C of 30, 60, and 90 degrees.

A = 30, B = 60, C = 90 degrees

smallest side is opposite 30 degrees (A) = opp = 1 cm

longest side is hypotenuse opposite 90 degrees (C) = hyp

1/hyp = sin(30)

1/hyp = 0.5

hyp = 1/.5 = 2

বাংলাদেশ ব্যাংক || সহকারী পরিচালক 28-10-2022

A. 48
B. 46
C. 42
D. 45

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Answer: Option B

Explanation:

A + B + C + D + E = 40 × 5 = 200
A + B = 35 × 2 = 70
C + D = 42 × 2 = 84
Therefore,
E = (A + B + C + D + E) - (A + B + C + D)
E = 200 - 70 - 84
E = 46 years

383 . The average age of a family of 6 members is 25 years. After a 45- yers old member leves the family, what is the average age ( in years) of the family?

A. 22
B. 21
C. 20
D. 19

View Answer	Favorite Question

Answer: Option B

Explanation:

6 জন সদস্যের সয়সের সমষ্টি = 6 × 25 = 150 বছর

5 বছর সদস্যের বয়সের সমষ্টি = 150 - 45 = 105 বছর

∴ বর্তমান বয়সের গড় = 105 = 21 বছর

সমন্বিত ৮ ব্যাংক | অফিসার | 21-01-2022

A. 35
B. 30
C. 24
D. 32

View Answer	Favorite Question

Answer: Option D

Explanation:

The average age of a group of 15 employees is 24 years.
Therefore, the sum of the ages of all 15 of them = 15 * 24 = 360
When 5 more employees join the group, the average age increases by 2 years. New average = 26.
Now, there are 20 employees.
Therefore, the sum of the ages of all 20 of them = 20x26 = 520
Therefore, the sum of the ages of the 5 new students who joined = 520 - 360 = 160
And the average age of each of the 5 new students = 160/5 = 32 years.

Senior Officer- 8 Bank Recruitment Test 31-08-2018

A. log n
B. (n + 1)/2
C. (n -1) /2
D. n /2

View Answer	Favorite Question

Answer: Option B

Explanation:

Sonali &amp-Janata Bank | Officer (IT)| 04.01.2019

A. 40.2
B. 40.4
C. 40.6
D. 40.8

View Answer	Favorite Question

Answer: Option B

Explanation:

According to question,

Sum = (40.2 × 10 - 18 + 33 - 13) = 404

Correct Average = 404/10 = 40.4

বাংলাদেশ ব্যাংক || সহকারী পরিচালক 28-10-2022

A. 7.8
B. 9.8
C. 10
D. 12.4
E. 15

View Answer	Favorite Question

Answer: Option E

Explanation:

The average of 6 numbers is 8.5

So, the sum of 6 numbers is 8.5x6 or 51

The average of 5 numbers is 7.2

So, the sum of 5 numbers is 7.2x5 or 36

So, the discarded number is 51 - 36 or 15

Normal 0 false false false EN - US X - NONE X - NONE

388 . The average of a series of consecutive odd numbers is 33. If there are 7 numbers in the series, what is the lowest number in the series ?

A. 25
B. 27
C. 29
D. 37
E. 39

View Answer	Favorite Question

Answer: Option B

Explanation:

There are 3 numbers higher than 33 and 3 numbers lower than 33. Therefore, the lowest odd number will be 33 - 2 - 2 - 2 = 33 - 6 = 27.

Bangladesh Bank - Assistant Director - 2011

A. 25
B. 27
C. 30
D. 35

View Answer	Favorite Question

Answer: Option D

Explanation:

390 . The average of nine numbers is 50. The average of the first five numbers is 54 and that of the last three numbers is 52. Then the sixth number is __

A. 30
B. 34
C. 44
D. 24

View Answer	Favorite Question

Answer: Option D

Explanation:

The 6th number is = (50 × 9) – (5 × 54 + 3 × 52) = 450 – 426 = 24. Ans: D.

Officer (Cash) -Sonali Bank | BD Development | BD Krishi Bank - 12.10.2018

376 . Sum of 4 consecutive even numbers is greater than consecutive odd numbers by 81. If the sum of the least odd and even numbers is 59 then find the sum of largest odd and even numbers.

377 . Sum of the interior angles of parallelogram is _____degree.

378 . The 180 students in a group are to be seated in rows to that there are an equal number of students in each row. Each of the following could be the number of rows except-

379 . The 356 members of metro-chamber of commerce will vote to choose a president. With 5 candidates seeking office, what is the least number of votes a successful candidate could receive and yet have more votes than any other candidate?

380 . The amount of time that three secretaries worked on a special project are in the ratio of 1 to 2 to 5. If they worked a combined total of 112 hours, how many hours did the secretary, who worked the longest spend on the project?

381 . The angles of a triangle are in the proportion of 1:2:3 and the length of the smallest side is 1 c. what is the length of the longest side of the triangle?

382 . The average age of A,B,C,D and E is 40 years. The average age of A and B is 35 years and the average of C and D is 42 years. Age of E is -

383 . The average age of a family of 6 members is 25 years. After a 45- yers old member leves the family, what is the average age ( in years) of the family?

384 . The average are of a group of 15 employing is 24 years, If 5 more employees join the group., the average age increases by 2 years. Find the average age of the new employ?

385 . The average Number of key comparisons done in a successful sequential search in a list of length it is :

386 . The average of 10 numbers is 40.2. Later it is found that two numbers have been wrongly added. The first one is 18 greater than the actual number and the second number added is 13 instead of 33. Find the correct average-

387 . The average of 6 number is 8.5, when one number is discarded the average of the remaining numbers becomes 7.2. What is the discarded number?

388 . The average of a series of consecutive odd numbers is 33. If there are 7 numbers in the series, what is the lowest number in the series ?

389 . The average of five numbers is 27. If one number is excluded, the average becomes 24. The excluded numbers is:

390 . The average of nine numbers is 50. The average of the first five numbers is 54 and that of the last three numbers is 52. Then the sixth number is __

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