2851 . 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?

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

প্রিমিয়াম প্ল্যান: ১ মাস

99 ৳

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

সাবস্ক্রিপশন লিংক

2852 . 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

View Answer	Favorite Question

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

2853 . The average of the first natural numbers is: Created:

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

View Answer	Favorite Question

Answer: Option D

Explanation:

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

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

View Answer	Favorite Question

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.

Bangladesh Bank - Assistant Director - 2014

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

View Answer	Favorite Question

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

2856 . 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

View Answer	Favorite Question

Answer: Option B

Explanation:

2857 . 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

View Answer	Favorite Question

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

2858 . 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

View Answer	Favorite Question

Answer: Option A

Explanation:

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

A. 30
B. 40
C. 60
D. 84

View Answer	Favorite Question

Answer: Option B

Explanation:

Bangladesh Bank - Officer - 2015

A. z-x
B. (z+x)/2
C. 2z-x
D. none of these

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Answer: Option C

Explanation:

The average of x and another number is z.

Sum of x and the other number is = 2z

so, the other number must be = 2z - x

ans: 2z - x

2861 . The average temperature for the first 4-days of a week is 40,2º C and that of the last 4-days is 41.3°C. If the average temperature for the whole week is 40.6° C, then temperature on the fourth day is -

A. 38.5 ° C
B. 41.8° C
C. 41.3°C
D. 40.8° C

View Answer	Favorite Question

Answer: Option B

Explanation:

Temperature on the fourth day
= [(40.2 × 4 + 41.3 × 4) - (40.6 × 7)]° C
= 41.8° C

সমন্বিত ৭ ব্যাংক || অফিসার (ক্যাশ) (24-05-2024)

A. 24°c
B. 21°c
C. 27°c
D. 30°c

View Answer	Favorite Question

Answer: Option D

Explanation:

2863 . The average wage of a worker during a fortnihgt comprising 15 consecutive working days was Taka 90 per day. During the first 7 days, his average wage was Taka 87 per day and the average wage during the last 7 days was Taka 92 per day. What was his wage on the 8th day ?

A. 83
B. 90
C. 92
D. 97

View Answer	Favorite Question

Answer: Option D

Explanation:

15 দিনের কাজের মোট বেতন ( 15 × 90) = 1350 টাকা

১ম 7 দিন ও শেষ 7 দিনের কাজের মোট বেতন ( 7 × 87 + 7 × 92) = 609 + 644 = 1253 টাকা।

অষ্টম দিনের কাজের বেতন ( 1350 - 1253) টাকা = 97 টাকা

2864 . The average weight for a group of 20 women is 130 pounds. If the average weight for 75% of these women was 140 pounds, what was the average weight in pounds for the rest of the women?

A. 100
B. 110
C. 120
D. 135

View Answer	Favorite Question

Answer: Option A

Explanation:

Total weight of 20 women = 20 x 130 = 2600 pounds

Total weight of 75% of 20 = 15 women = 15 x 140 = 2100 pounds

Total weight of the rest 5 women = 2600 - 2100 = 500 pounds

Then, the average weight of these 5 women = 500/5 = 100 pounds.

সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান || সিনিয়র অফিসার (10-11-2023)

A. 37
B. 35
C. 33
D. 32

View Answer	Favorite Question

Answer: Option A

Explanation:

Total Weight = (33*3) kg = 99 kg

Let,

Two friends minimum weight = 31 kg and 31kg

So, third friend Maximum weight = (99 - 31 - 31)kg = 37 kg .

Bangladesh Bank - Officer - 2001

2851 . 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?

2852 . The average of six numbers is x and the average of three is y. If the average of the remaining three is z, then :

2853 . The average of the first natural numbers is: Created:

2854 . The average of the two-digit numbers, which remain the same when the digits interchange their positions , is :

2855 . The average of three numbers is 7. If 2 of the numbers are zero, then what if the 3rd number?

2856 . The average of three numbers is V. If one of the numbers is Z and another is Y, then what is the remaining number?

2857 . The average of two numbers is 6.5 and square root of their product is 6 . What are the number?

2858 . 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?

2859 . The average of two numbers is 62. If 2 is added to the smaller number, the ratio between the numbers becomes 1 :2 . The smaller number is -

2860 . The average of x and another number is z. the other number must be ----

2861 . The average temperature for the first 4-days of a week is 40,2º C and that of the last 4-days is 41.3°C. If the average temperature for the whole week is 40.6° C, then temperature on the fourth day is -

2862 . The average temperature on Wednesday,Thursday and Friday was 25°c. The average temperature on Thursday, Friday and Saturday was 24°c. If the temperature on saterday was 27°c, what was the temperature on Wednesday?

2863 . The average wage of a worker during a fortnihgt comprising 15 consecutive working days was Taka 90 per day. During the first 7 days, his average wage was Taka 87 per day and the average wage during the last 7 days was Taka 92 per day. What was his wage on the 8th day ?

2864 . The average weight for a group of 20 women is 130 pounds. If the average weight for 75% of these women was 140 pounds, what was the average weight in pounds for the rest of the women?

2865 . The average weight of 3 friends is 33 kg. None of the friends weights less than 31 kg . What can be the maximum weight of any three friends ?

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