3031 . The average of four consecutive odd positive integers is always.

A. an odd number
B. divisible by 4
C. an even number
D. both (B) and (C)
E. None of them

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Answer: Option C

Explanation:

1 + 3 + 5 + 7 = 16

average = 16/4 = 4

even number

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3032 . The average of four consecutive odd positive integers is always--

A. an even number
B. an odd number
C. divisible by 4
D. Both a and c

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Answer: Option A

Explanation:

1 + 3 + 5 + 7 = 16

average = 16/4 = 4

even number

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3033 . 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

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Answer: Option D

Explanation:

৯টি সংখ্যার সমষ্টি= ৯×৫০=৪৫০

প্রথম ৫টি সংখ্যার সমষ্টি=৫×৫৪=২৭০

শেষের ৩টি সংখ্যার সমষ্টি=৩×৫২=১৫৬

অতএব, প্রথম ৫টি ও শেষের ৩টি সংখ্যার সমষ্টি= ২৭০+১৫৬=৪২৬

অতএব, ষষ্ঠ সংখ্যাটি =৪৫০-৪২৬=২৪

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3034 . The average of runs of a cricket player of 10 innings was 32. How many runs must he make in his next inning so as to increase his average of runs by 4?

A. 2
B. 4
C. 70
D. 76

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Answer: Option D

Explanation:

Average= Total runs/ No. of innings =32
So,
Total runs
=32×10
=320
Now increase in average is 4 runs
so,
New average =32+4=36 runs
Total runs =36×11=396
Runs made in the 11th inning =396−320=76

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

A. 72
B. 90
C. 93
D. 98

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Answer: Option C

Explanation:

Hints:average mark = মোট 7 টি subject এর mark /7

science এর মার্ক = ( 7 × 75 - 6 × 72) = 93

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3036 . The average of six numbers is 14. The average of four of these numbers is 15. The average of the remaining two number is -

A. 4
B. 8
C. 12
D. 16

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Answer: Option C

Explanation:

T h e s u m o f s i x n u m b e r s = (14 \times 6) = 84 The sum of 4 numbers = (15 \times 4) = 60 ∴ Average remaining two numbers = \frac{84 - 60}{2} = \frac{24}{2} = 12

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অফিসার (সাধারণ) ২৭.১২. ২০১৯

A. 4.5
B. 4.6
C. 4.7
D. 4.8

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Answer: Option B

Explanation:

Sum of the reaming two numbers are

= ( 3.95 ×6) - [ (3.4×2) + ( 3.85×2) ]

= 23.70 - ( 6.8 + 7.7)

= 23.70 - 14.5

= 9.20

Average = 9.20/2 = 4.6

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3038 . The average of six numbers is x and the average of three is y. If the average of the remaining three is z, then :

A. x=y+z
B. x=2y+2z
C. 2x=y+z
D. none of these

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Answer: Option C

Explanation:

Hints: Average of 6 numbers = x

sum of 6 numbers = 6x

Average of the 3 numbers = y

sum of the 3 numbers = 3y

Average of the remaining 3 numbers = z

sum of the remaining 3 numbers = 3z

Now, we know that 6x = 3y + 3z

2x = y + z

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3039 . The average of the first natural numbers is: Created:

A. 12.5
B. 28
C. 25.5
D. None of these

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Answer: Option D

Explanation:

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One Bank Ltd || Special Cadre Officer (03-01-2025) || 2025

3040 . The average of the first nine -prime numbers is:

A. $9$
B. $11$
C. $11 \frac{1}{9}$
D. $11 \frac{2}{9}$

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Answer: Option C

Explanation:

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Bangladesh Bank - Assistant Director - 2014

A. 33
B. 44
C. 55
D. 66

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Answer: Option C

Explanation:

= 11 + 22 + 33 + 44 + 55 + 66 + 77 + 88 + 999 = (11 + 99) + (22 + 88) + (33 + 77) + (44 + 66) + 559 = 4 × 110 + 559 = 4959 = 55.

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Bangladesh Bank - Assistant Director - 2014

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

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3043 . The average of three numbers is V. If one of the numbers is Z and another is Y, then what is the remaining number?

A. z/x - z - y
B. 3V - Z - Y
C. V - Z - Y
D. ZY - V

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Answer: Option B

Explanation:

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3044 . The average of two numbers is 6.5 and square root of their product is 6 . What are the number?

A. 11 and 2
B. 8 and 5
C. 10 and 3
D. 9 and 4

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Answer: Option D

Explanation:

{(x + y)/2} = 6.5

= > x + y = 13

আবার, ✓(xy) = 6

= > xy = 36

Option থেকে 9 + 4 = 14 এবং 6×4 = 36

So, Ans. 9 and 4

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3045 . The average of two numbers is 62. If 2 is added to the smaller number, the ratio between the numbers becomes 1 : 2. What is the smaller number?

A. 40
B. 30
C. 60
D. 80

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Answer: Option A

Explanation:

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জনতা ব্যাংক || অফিসার (আরসি) (28-06-2024) || 2024

3031 . The average of four consecutive odd positive integers is always.

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3032 . The average of four consecutive odd positive integers is always--

3033 . 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:

3034 . The average of runs of a cricket player of 10 innings was 32. How many runs must he make in his next inning so as to increase his average of runs by 4?

3035 . The average of Selim’s marks in 7 subjects is 75. His average in six subjects excluding Science is 72. How many marks did he get in Science?

3036 . The average of six numbers is 14. The average of four of these numbers is 15. The average of the remaining two number is -

3037 . The average of six numbers is 3.95. The average of two of them is 3.4, while average of the other two is 3.85. What is the average of the remaining two numbers?

3038 . The average of six numbers is x and the average of three is y. If the average of the remaining three is z, then :

3039 . The average of the first natural numbers is: Created:

3041 . The average of the two-digit numbers, which remain the same when the digits interchange their positions , is :

3042 . The average of three numbers is 7. If 2 of the numbers are zero, then what if the 3rd number?

3043 . The average of three numbers is V. If one of the numbers is Z and another is Y, then what is the remaining number?

3044 . The average of two numbers is 6.5 and square root of their product is 6 . What are the number?

3045 . The average of two numbers is 62. If 2 is added to the smaller number, the ratio between the numbers becomes 1 : 2. What is the smaller number?

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