631 . 6,7,9,13,, _. what are the two missing numbers in the series?

A. 21,37
B. 17,21
C. 21,39
D. 17,19

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Answer: Option A

Explanation:

7=6+(1×1)

9=7+(1×2)

13=9+(1×4)

So, next=13+(1×8)=21

Next=21+(1×16)=37

(ans)

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Sonali &amp- Janata Bank Ltd. Senior Officer (IT/ICT) 08.06.2018

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632 . 60% of the students of a college are male. 60% of the males in the college speak French and 40% of the students of the college speak French. What is the percentage of the females in the college who do not speak French?

A. 40%
B. 90%
C. 60%
D. 85%
E. None of these

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Answer: Option E

Explanation:

60% of the students are male.

60% of the males speak French.

40% of the students speak French.

We want to find the percentage of females in the college who do not speak French.

First, let's find the percentage of females in the college. Since 60% of the students are male, the remaining percentage of students must be female:

Percentage of females = 100% - 60% = 40%

Now, let's calculate how many of these females speak French. We know that 40% of the students speak French, and we just found that 40% of the students are female. So, the percentage of females who speak French is:

Percentage of females who speak French = 40% * 40% = 16%

Now, to find the percentage of females who do not speak French, subtract the percentage who do from 100%:

Percentage of females who do not speak French = 100% - 16% = 84%

So, the percentage of females in the college who do not speak French is 84%. None of the answer choices provided matches this percentage, so the correct answer is “None of these.”

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633 . 617+6.017+0.617+6..0017 = ?

A. 6.2963
B. 62.965
C. 629.6357
D. None of these

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Answer: Option C

Explanation:

Hints : 617 + 6.017 + .617 + 6.0017 = 629.6357

( The first digit is 617, the sum would definitely be over 617)

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634 . 66 cubic centimeters of silver is drawn into a wire 1 mm in diameter. The length of the wire in meters will be-

A. 84 meters
B. 90 meters
C. 168 meters
D. 336 meters

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Answer: Option A

Explanation:

Volume (V) = πr²h

Where:

V is the volume of the wire (given as 66 cubic centimeters).
π (pi) is approximately 3.14159.
r is the radius of the wire.
h is the length of the wire we want to find.

First, let's find the radius. The diameter of the wire is given as 1 mm, which means the radius (r) is half of that:

r = 1 mm / 2 = 0.5 mm = 0.05 cm (since 1 cm = 10 mm)

Now, plug in the values into the formula:

66 = 3.14159 * (0.05 cm)² * h

Now, solve for h (the length of the wire):

h = 66 / [3.14159 * (0.05 cm)²] h ≈ 84 meters

So, the length of the wire is approximately 84 meters.

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সমন্বিত পাঁচ ব্যাংক || অফিসার ক্যাশ - 06.11.2021

A. 37
B. 333
C. 111
D. 84

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Answer: Option A

Explanation:

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636 . 7 is 5% of what number ?

A. 128
B. 156
C. 140
D. 135

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Answer: Option C

Explanation:

7 is 5% = 7 × 5/100

বা, 7 × 1/20

বা, 7/0.05 = 140

আশা করি বুঝতে পারছেন

ধন্যবাদ

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Bangladesh Bank - Officer - 2001

A. 20
B. 30
C. 40
D. 60

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Answer: Option A

Explanation:

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

A. 250
B. 320
C. 200
D. 240

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Answer: Option A

Explanation:

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639 . 729ml of a mixture contains milk and water in ratio 7 : 2 . How much of the water is to be added to get a new mixture containing half milk and half water ?

A. 405ml
B. 81ml
C. 72ml
D. 91ml

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Answer: Option A

Explanation:

729 * 7/9 = 81 * 7 = 567 = Milk

729 * 2/9 = 81 *2 = 162 = Water

Water to be added : 567 - 162 = 405.

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Bangladesh Bank - Assistant Director - 2010

A. 0.04
B. 0.50
C. 0.06
D. 0.060

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Answer: Option C

Explanation:

0.08% × 75% = 0.08 × 75/100 = 0.06

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Bangladesh Bank - Assistant Director - 2010

A. 4242
B. 4155
C. 1123
D. 11023

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Answer: Option B

Explanation:

Let 7589−x=3434
Then, x=7589−3434=4155

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

A. 76
B. 84
C. 100
D. 112

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Answer: Option A

Explanation:

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643 . 8 is added to x. The sum is multiplied by 3. The product is devided by 2. Then 7 is subtracted from the quotient. The remainder is 50. Therefore x is--

A. 35
B. 20
C. 30
D. 40

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Answer: Option C

Explanation:

First, x+8

Second, 3(x+8)

Third, 3(x+8)/2

Fourth, 3(x+8)/2 - 7= 50

=> 3(x+8)/2 = 57

=> 3(x+8) =114

=> x+8 = 38

=> x = 30

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644 . 8 males and 6 females can do a piece of work in 5 days, 5 males and 6 females can complete the same work in 7 days . How many days will a female take to do the job, if she works alone?

A. 135 days
B. 142 days
C. 110 days
D. 126 days

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Answer: Option D

Explanation:

(8M + 6F) × 5 = (5M + 6F) × 7

= > 40M + 30F = 35M + 42F

= > 5M = 12F

Now, (5M + 6F) = 12F + 6F = 18F

18F can do in = 7 days

1F can do in = 18x 7 = 126 days Ans.

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Officer (General) |-Sonali | Janata | Bangladesh Krishi_Bangladesh Development bank ২৪.০৫.২০১৯

A. 138 years
B. 164 years
C. 148 years
D. 152 years

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Answer: Option C

Explanation:

A:B  = 4 :5 [8 years ago] 
 = 32:40 [multiplying by 12]
 = 32   +  8:40   +  8 [present]
 = 40 :48
B:C  = 4 : 5
 = 48 : 60 [multiplying by 12]
∴ A :B :C  = 40 : 48 : 60 
The sum of the ages of 
A,B and C 
 = 40   +  48   +  60 
 = 148 years

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জনতা ও রূপালী ব্যাংক- অফিসার ১৩.১২.২০১৯

631 . 6,7,9,13,, _. what are the two missing numbers in the series?

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632 . 60% of the students of a college are male. 60% of the males in the college speak French and 40% of the students of the college speak French. What is the percentage of the females in the college who do not speak French?

633 . 617+6.017+0.617+6..0017 = ?

634 . 66 cubic centimeters of silver is drawn into a wire 1 mm in diameter. The length of the wire in meters will be-

635 . 666 ÷ 6 ÷ 3 = ?

636 . 7 is 5% of what number ?

637 . 7 is added to a certain number, the sum is multiplied by 5; the product is divided by 9 and 3 is subtracted from the quotient. The remainder deft is 12. The number is:

638 . 72% of the students of a certain class took Biology and 44% took mathematics. If each students took Biology or Mathematics or both. If 40 students took both Biology and Mathematics then the total number of students in the class was---

639 . 729ml of a mixture contains milk and water in ratio 7 : 2 . How much of the water is to be added to get a new mixture containing half milk and half water ?

640 . 75% of 0.08 = ?

641 . 7589-? = 3434

642 . 8, 14, 24, 42, ......, 142

643 . 8 is added to x. The sum is multiplied by 3. The product is devided by 2. Then 7 is subtracted from the quotient. The remainder is 50. Therefore x is--

644 . 8 males and 6 females can do a piece of work in 5 days, 5 males and 6 females can complete the same work in 7 days . How many days will a female take to do the job, if she works alone?

645 . 8 years ago, the ratio of A's age to B's age was 4 :5 At present the ratio of B's age and C's age is 4 : 5 At present , the difference between A's age and C's age is 20 years, then what is the sum of the ages of A, B and C?

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প্রয়োজনীয় লিঙ্ক

631 . 6,7,9,13,__, ___. what are the two missing numbers in the series?

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632 . 60% of the students of a college are male. 60% of the males in the college speak French and 40% of the students of the college speak French. What is the percentage of the females in the college who do not speak French?

633 . 617+6.017+0.617+6..0017 = ?

634 . 66 cubic centimeters of silver is drawn into a wire 1 mm in diameter. The length of the wire in meters will be-

635 . 666 ÷ 6 ÷ 3 = ?

636 . 7 is 5% of what number ?

637 . 7 is added to a certain number, the sum is multiplied by 5; the product is divided by 9 and 3 is subtracted from the quotient. The remainder deft is 12. The number is:

638 . 72% of the students of a certain class took Biology and 44% took mathematics. If each students took Biology or Mathematics or both. If 40 students took both Biology and Mathematics then the total number of students in the class was---

639 . 729ml of a mixture contains milk and water in ratio 7 : 2 . How much of the water is to be added to get a new mixture containing half milk and half water ?

640 . 75% of 0.08 = ?

641 . 7589-? = 3434

642 . 8, 14, 24, 42, ......, 142

643 . 8 is added to x. The sum is multiplied by 3. The product is devided by 2. Then 7 is subtracted from the quotient. The remainder is 50. Therefore x is--

644 . 8 males and 6 females can do a piece of work in 5 days, 5 males and 6 females can complete the same work in 7 days . How many days will a female take to do the job, if she works alone?

645 . 8 years ago, the ratio of A's age to B's age was 4 :5 At present the ratio of B's age and C's age is 4 : 5 At present , the difference between A's age and C's age is 20 years, then what is the sum of the ages of A, B and C?

631 . 6,7,9,13,, _. what are the two missing numbers in the series?