1816 . If 8 men can reap 801 hectares in 24 days, then dhow many hectares can 36 men reap in 30 days?

A. 350
B. 400
C. 450
D. 425

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Answer: Option C

Explanation:

8 men in 24 days reap 80 hectares

∴1 men in 1 days reap 80/(8×24) hectares

∴36 men in 30 days reap (80×36×30)/(24×8) hectares

= 450 hectares

1817 . If 8x+8y=64, what is the average of x and y?

A. 16
B. 64
C. 8
D. 4

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Answer: Option D

Explanation:

x এবং y এর গড় অর্থাৎ (x + y)/2 এর মান বের করতে হবে ।

এখন, 8x + 8y = 64

= > 8 (x + y) = 64

= > 8(x + y)/16 = 64/16 [ 16 দ্বারা উভয় পক্ষকে ভাগ করে ]

= > (x + y)/2 = 4

1818 . If 8x + 8y = 64, what is the average of x and y?

A. 16
B. 4
D. 1

View Answer	Favorite Question

Answer: Option B

Explanation:

x এবং y এর গড় অর্থাৎ (x + y)/2 এর মান বের করতে হবে ।

এখন, 8x + 8y = 64

= > 8 (x + y) = 64

= > 8(x + y)/16 = 64/16 [ 16 দ্বারা উভয় পক্ষকে ভাগ করে ]

= > (x + y)/2 = 4

1819 . If 90% of A = 30% of B and B = x% of A, then the value of x is-

A. 600
B. 300
C. 900
D. 800

View Answer	Favorite Question

Answer: Option B

Explanation:

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

A. 1/2
B. 3/2
C. 7/2
D. 5/2

View Answer	Favorite Question

Answer: Option A

Explanation:

1821 . If A's income is 25% more than B's income, then the percentage of B's income in terms of A's income is:

A. 80%
B. 70%
C. 60%
D. 40%

View Answer	Favorite Question

Answer: Option A

Explanation:

Here, A : B = 5 : 4 = 100 : 80

So, B's income in terms of A's income=80% (Ans)

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

1822 . if $a + b + c = 0$ , the value of $\frac{a^{2}}{b c} + \frac{b^{2}}{c a} + \frac{c^{2}}{a b}$ is - ..

A. $3 a b c$
B. $\frac{1}{3}$
C. $1$
D. $3$

View Answer	Favorite Question

Answer: Option D

Explanation:

we have (a^{3} + b^{3} + c^{3} - 3 abc) = (a + b + c) \times (a^{2} + b^{2} + c^{2} - ab - bc - ac) when a + b + c = 0 [given] then, a^{3} + b^{3} + c^{3} = 3 abc \Rightarrow \frac{a^{3}}{abc} + \frac{b^{3}}{abc} + \frac{c^{3}}{abc} = 3 \Rightarrow \frac{a^{2}}{bc} + \frac{b^{2}}{ac} + \frac{c^{2}}{ab} = 3

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

1823 . If a+b =8 and ab =12 then find the value of a2-b2 ..

A. 16
B. 32
C. 36
D. 49

View Answer	Favorite Question

Answer: Option B

Explanation:

G i v e n, a + b = 8, a b = 12 ∴ a^{2} - b^{2} = (a + b) (a - b) = 8 \times 4 = 32 ∴ a^{2} - b^{2} = 32 B u t w e k n o w, (a - b) = \sqrt{{(a + b)}^{2} - 4 a b} = \sqrt{64 - 48} = \sqrt{16} = 4

DESCO Recruitment Test 2022 | Sub Station Attendant | 17.09.2022

A. a + b < c
B. a - b < c
C. a + b = c
D. a+b≥c

View Answer	Favorite Question

Answer: Option B

Explanation:

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

A. 45
B. 22.5
C. 67.5
D. 85

View Answer	Favorite Question

Answer: Option C

Explanation:

1826 . If a, b, c are the lengths of the sides of a triangle, then which of the following is true?

A. a+b>c
B. a+b=c
C. a-b
D. a+b

View Answer	Favorite Question

Answer: Option C

Explanation:

The correct option is C. a – b < c

If a, b and c are the lengths of the three sides of a triangle, then the difference of any two sides must be less than the third side. So, a – b < c is the correct option.

সিকিউরিটি প্রিন্টিং কর্পোরেশন বাংলাদেশ | সহকারী ব্যবস্থাপক- 26-11-2021

A. CDAB
B. BACD
C. DCAB
D. DCBA
E. BDAC

View Answer	Favorite Question

Answer: Option C

Explanation:

1828 . If A + B + C =10 , A +B =7 and A- B = 5 , what is the value of c?

A. 1
B. 3
C. 6
D. 7

View Answer	Favorite Question

Answer: Option B

Explanation:

A + B + C = 10

A + B = 7

7 + C = 10 or C = 3

1829 . If A + B = 2C and C + D = 2A , then

A. A + C = B + D
B. A + C = 2D
C. A + D = B + C
D. A + C = 2B

View Answer	Favorite Question

Answer: Option A

Explanation:

A + B = 2C

C + D = 2A

- - - - - - - - - - - - - - - - - - - - - - - - -

A + B + C + D = 2C + 2A

বা, 2C + 2A - C - A = B + D

বা, A + C = B + D.

Bangladesh Bank - Assistant Director - 2016

A. 1/2
B. 1
C. 3/2
D. 2

View Answer	Favorite Question

Answer: Option C

Explanation:

(2/a)+(1/b)

=(2b+a)/ab

=6/4

=3/2

(ans).

Sonali Bank Ltd. Senior Officer Recruitment 01.06.2018

1816 . If 8 men can reap 801 hectares in 24 days, then dhow many hectares can 36 men reap in 30 days?

1817 . If 8x+8y=64, what is the average of x and y?

1818 . If 8x + 8y = 64, what is the average of x and y?

1819 . If 90% of A = 30% of B and B = x% of A, then the value of x is-

1820 . If 92x + 1 = 81, then x =?

1821 . If A's income is 25% more than B's income, then the percentage of B's income in terms of A's income is:

1824 . If a, b, and c are the lengths of the three sides of a triangle, then which of the following is true?

1825 . If A, B, C, D and E are points in a plane such that the line CD bisects angle ACB and line CB bisects right angle ACE, then a angle DCE =

1826 . If a, b, c are the lengths of the sides of a triangle, then which of the following is true?

1827 . If A,B,C and D are positive Integers such that 4A=9B,17C=11D. and 5C=12A. then the arrangement of the four numbers from greatest to least is --

1828 . If A + B + C =10 , A +B =7 and A- B = 5 , what is the value of c?

1829 . If A + B = 2C and C + D = 2A , then

1830 . if a +2b=6 and ab=4 what is 2/a+1/b?

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