2116 . If the area of a circle is 25π then diameter of the circle is--

A. 6
B. 10
C. 20
D. 25

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Answer: Option B

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2117 . If the area of a small pizza is 78.5 in. what size pizza box would best fit the small pizza?

A. 12 in
B. 11 in
C. 9 in
D. 10 in

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Answer: Option D

Explanation:

To find the size of the pizza box that would best fit the small pizza, we can use the diameter of the pizza as the size of the pizza box.

The area of a circle is given by the formula: A = πr^2, where "A" is the area and "r" is the radius.

In this case, the area of the small pizza is 78.5 square inches. We can use this information to find the radius of the pizza:

78.5 = πr^2

Now, solve for "r":

r^2 = 78.5 / π r^2 ≈ 25 r ≈ √25 r ≈ 5 inches

So, the radius of the small pizza is approximately 5 inches. To find the diameter (which is also the size of the pizza box needed), simply double the radius:

Diameter = 2 * 5 inches = 10 inches

Therefore, a 10-inch pizza box would best fit the small pizza.

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সহকারী পরিচালক(AD) -12.11.2021

A. x
B. 2
C. 2x
D. 3x

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Answer: Option C

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

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

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Answer: Option A

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

A. 30
B. 40
C. 70
D. 90

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Answer: Option B

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2121 . If the average (arithmetic mean) of 16, 20 and n is between 18 and 21 inclusive, what is the greatest possible value of n ?

A. 18
B. 21
C. 27
D. 54

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Answer: Option C

Explanation:

we must take such a value of n for which the average must be in between 18 to 21, inclusive. It means 21 can be the average . We are looking fro greatest value of n. So, we must take 21 as average of this 3 numbers.

16 + 20 + n = 3×21

= > 36 + n = 63

∴n = 27.

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2122 . If the average (arithmetic mean) of 5, 9, k, and m is 12, what is the average of k+7 and m-3?

A. 14
B. 38
C. 19
D. 21

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Answer: Option C

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SBAC Bank PLC || Trainee Junior Officer (28-09-2024) || 2024

A. 40

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Answer: Option A

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বিমান বাংলাদেশ এয়ারলাইন্স লিঃ নিয়োগ পরীক্ষা-২০১৮। গ্রাউন্ড সার্ভিস অ্যাসিসটেন্ট। ১৩.১০.২০১৮

A. 70
B. 40
C. 20
D. None

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Answer: Option B

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2125 . If the average of 'm' numbers is n2 and that of 'n' numbers is m2, then the average of (m + n) numbers is -

A. m+n
B. m-n
C. m/n
D. mn

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Answer: Option D

Explanation:

Average of m numbers n^2

So, Sum of m numbers= mn^2

Average of n numbers m^2

So, sum of n numbers= nm^2

Now,

Sum of (m+n) numbers= mn^2+nm^2 = mn(m+n)

Average of (m+n) numbers= {mn(m+n)}/(m+n) = mn

Ans: mn.

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বাংলাদেশ ব্যাংক || সহকারী পরিচালক (AD) (20-10-2023)

A. 10
B. 15
C. 19
D. 5

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Answer: Option D

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2127 . If the average of 11,17,x, and y is 19, what is the average of (x+50) and (y-7)?

A. 46
B. 23
C. 21
D. 14
E. None of these

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Answer: Option B

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2128 . If the average of 16, 20 and n is between 18 and 21 inclusive, what is the greatest possible value of n?

A. 18
B. 21
C. 27
D. 54

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Answer: Option C

Explanation:

16 + 20 + n = 3×21

= > 36 + n = 63

∴n = 27.

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2129 . If the average of 5 consecutive integers is 12, find the smallest integer.

A. 10
B. 57
C. 60
D. 59

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Answer: Option A

Explanation:

The third number is the average number of 5 consecutive integers.

So, the smallest integer is = 12 - 2 = 10

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2130 . If the average of 5 consecutive integers is 15 then what is the difference between the least and the greatest of the 5 ingers?

A. 4
B. 5
C. 8
D. 10
E. None of these

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Answer: Option A

Explanation:

Let's denote the five consecutive integers as x, x + 1, x + 2, x + 3, and x + 4, where x is the smallest integer among them.

According to the given information, the average of these integers is 15. So, we can write the equation:

(x + x + 1 + x + 2 + x + 3 + x + 4) / 5 = 15

Now, let's simplify this equation:

(5x + 10) / 5 = 15

Now, multiply both sides of the equation by 5 to isolate 5x:

5x + 10 = 15 * 5

5x + 10 = 75

Subtract 10 from both sides:

5x = 75 - 10

5x = 65

Now, divide by 5:

x = 65 / 5

x = 13

So, the smallest integer is 13, and the greatest integer is x + 4 = 13 + 4 = 17.

The difference between the greatest and the least of the 5 integers is:

17 - 13 = 4

Therefore, the difference is 4.

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বাংলাদেশ গ্যাস ফিল্ড | সহকারী-ব্যবস্থাপক | 03-12-2021

2116 . If the area of a circle is 25π then diameter of the circle is--

2117 . If the area of a small pizza is 78.5 in. what size pizza box would best fit the small pizza?

2118 . If the area of a triangle with base x is equal to the area of a square with side x, then the altitude of the triangle is-

2119 . If the area of a triangle with base x is equal to the area of a square with side x, then the altitude of the triangle is:

2120 . If the arithmetic mean of sevety five numbers is calculated, it is 35. If each number is increased by 5, then mean of new numbers is:

2121 . If the average (arithmetic mean) of 16, 20 and n is between 18 and 21 inclusive, what is the greatest possible value of n ?

2122 . If the average (arithmetic mean) of 5, 9, k, and m is 12, what is the average of k+7 and m-3?

2123 . If the average (arithmetic mean) of x and y is 60 and the average (arithmetic mean) of y and z is 80, what is the value of(z-x)?

2124 . If the average (arithmetic mean) of x and y is 60 and the average (arithmetic mean) of y and z is 80, what is the value of (z-x)?

2125 . If the average of 'm' numbers is n2 and that of 'n' numbers is m2, then the average of (m + n) numbers is -

2126 . If the average of (x-3), (x-5), and (x-7) is 0, then what is the value of x ?

2127 . If the average of 11,17,x, and y is 19, what is the average of (x+50) and (y-7)?

2128 . If the average of 16, 20 and n is between 18 and 21 inclusive, what is the greatest possible value of n?

2129 . If the average of 5 consecutive integers is 12, find the smallest integer.

2130 . If the average of 5 consecutive integers is 15 then what is the difference between the least and the greatest of the 5 ingers?

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