2821 . The average of 10 numbers is -10. If the sum of 6 of them is 100, then what is the average of the other 4 numbers?

A. -100
B. -50
C. 50
D. 100

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Answer: Option B

Explanation:

Total of 10 numbers = - 10×10 = - 100

the sum of 6 numbers is 100

so,Sum of last 4 numbers = - 100 - 100 = - 200

∴Average = - 200/4 = - 50 (ans)

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

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2822 . The average of 15 consecutive integers is 15. Find the smallest of the 15 integers?

A. 6
B. 7
C. 8
D. 9

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Answer: Option C

Explanation:

2823 . The average of 15 consecutive integers is 15. What is the smallest of the 15 integers?

A. 8
B. 9
C. 15
D. 6

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Answer: Option A

Explanation:

2824 . The average of 2, 7, 6 and x is 5 and the average of 18, 1, 6, x and y is 10. What is the value of y?

A. 5
B. 10
C. 20
D. 30

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Answer: Option C

Explanation:

Hints: (2 + 7 + 6 + x) / 4 = 5

15 + x = 20

x = 20 - 15

x = 5

and, (18 + 1 + 6 + x + y)/5 = 10

18 + 1 + 6 + 5 + y = 50

y = 20

2825 . The average of 20, 70 and x is 40. If the average of 20, 70, x and y is 50, then y =?

A. 100
B. 80
C. 70
D. 60

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Answer: Option B

Explanation:

20 + 70 + x = 3 × 40

বা, x = 30

20 + 70 + 30 + y = 200

বা, y = 80

2826 . The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero ?

B. 1
C. 10
D. 19

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Answer: Option D

Explanation:

Hints : Average of 20 numbers = 0

sum of 20 numbers = (0 × 20) = 0

It is quite possible that 19 of these numbers may be positive and if their sum is a them 20th numbers is ( - a)

শিল্প মন্ত্রণালয়ের অধীন বিসিআইসি'র সহকারী ব্যবস্থাপক-০৯.১২.২০১১

A. 20
B. 24
C. 26
D. 28
E. 30

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Answer: Option D

Explanation:

Let, third number is x

so, (x + 21 + 33)/3 = 24

বা, x = 72 - 44 = 28.

Bangladesh Bank - Assistant Director - 2006

A. 15
B. 17
C. 19
D. 21

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Answer: Option D

Explanation:

given, average of 3 numbers is 7

and 2 of the numbers are zero

let the 3rd number is x

According to the question,

(x + 0 + 0)/3 = 7

or, x = 21

ans: 21

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

A. 5m
B. m+3
C. m+2
D. nm+2

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Answer: Option C

Explanation:

মনেকরি, m দিয়ে শুরু হওয়া 5টি ধারাবাহিক পূর্ণ সংখ্যা যথাক্রমে,m,m + 1,m + 2,m + 3,m + 4
এদের গড় = m + 2
[মধ্যবর্তী সংখ্যা] .:. n = m + 2

সমন্বিত ৪ ব্যাংক - সহকারী প্রোগ্রামার - 25.09.2020

A. 8.7
B. 30.1
C. 30.3
D. 34.6

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Answer: Option D

Explanation:

প্রথম number - এর সমষ্টি (40×540×5)  =  200
পরের 2 টি " " " ( 21×2 21×2 )  =  42 
∴∴ 7 টি number - এর সমষ্টি (200   +   42)  =  242
∴∴ 7 টি " " গড়(242÷7242÷7)  =  34.57

2831 . The average of 5 positive integers is 60. If the average of 3 of these integers is 67, what is the greatest possible value that one of the other two integers can have?

A. 98.5
B. 63.5
C. 99
D. 98
E. Cannot be determined

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Answer: Option D

Explanation:

Sum of three numbers = 67 × 3 = 201

So, if the other two integers are x and y

( 201 + x + y) / 5 = 60

x + y = 99

2832 . The average of 5 quantities is 6 . The average of 3 of them is 8 . What is the average of the remaining two numbers ?

A. 6.5
B. 4
C. 3
D. 3.5
E. None of these

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Answer: Option C

Explanation:

Total of 5 = 6 × 5 = 30

Total of 3 = 8 × 3 = 24

( - ) Total of 2 = 6

Avg of = 3

Bangladesh Bank - Assistant Director - 2009

A. 28.32
B. 28.78
C. 29.27
D. 29.68

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Answer: Option D

Explanation:

পূবালী ব্যাংক লিমিটেড || জুনিয়র অফিসার (30-09-2023) || 2023

A. 8
B. 9
C. 11
D. 1

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Answer: Option A

Explanation:

2835 . The average of 6 numbers is 25. If 3 more numbers with an average of 22 are added to these numbers, what will be the average of the combined 9 numbers?

A. 20
B. 22
C. 24
D. 25

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Answer: Option C

Explanation:

The average of 6 numbers is 25
The Total of 6 numbers is = 25×6 = 150
The average of 3 numbers is 22
The Total of 3 numbers is = 22×3 = 66
The Total of (6 + 3) = 9 numbers is = (150 + 66) = 216

The average of 9 numbers is = 216/9 = 24
ans: 24

Three Combined Bank Recruitment - Senior Officer 03 .08.2018 ||

2821 . The average of 10 numbers is -10. If the sum of 6 of them is 100, then what is the average of the other 4 numbers?

2822 . The average of 15 consecutive integers is 15. Find the smallest of the 15 integers?

2823 . The average of 15 consecutive integers is 15. What is the smallest of the 15 integers?

2824 . The average of 2, 7, 6 and x is 5 and the average of 18, 1, 6, x and y is 10. What is the value of y?

2825 . The average of 20, 70 and x is 40. If the average of 20, 70, x and y is 50, then y =?

2826 . The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero ?

2827 . The average of 3 numbers is 24. If 2 of the number are 21 and 23,what is the 3rd number?

2828 . The average of 3 numbers is 7. If 2 of the numbers are zero, then what is the 3rd number?

2829 . The average of 5 consecutive number integers starting with m as the first integers is n then n = ?

2830 . The average of 5 numbers is 40. If 2 more numbers with an average of 21 are added to these numbers, what will be the average of the combined numbers?

2831 . The average of 5 positive integers is 60. If the average of 3 of these integers is 67, what is the greatest possible value that one of the other two integers can have?

2832 . The average of 5 quantities is 6 . The average of 3 of them is 8 . What is the average of the remaining two numbers ?

2833 . The average of 50 numbers is 30. If two numbers, 35 and 40, are discarded, then the average of the remaining numbers is nearly.

2834 . The average of 6, 8 and 10 equals the average of 7, 9 and --

2835 . The average of 6 numbers is 25. If 3 more numbers with an average of 22 are added to these numbers, what will be the average of the combined 9 numbers?

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