Bangladesh Bank - Assistant Director - 2011
মোট প্রশ্ন: ৮৫
৪১
৪১
What is the slope of the line that contains the points ( 1, 3 ) and ( 4, -3 ) ?
ক.✓ সঠিক উত্তর
-2
খ.
-0.5
গ.
1
ঘ.
2
ব্যাখ্যা
Slope of the line = 3 - ( - 3) / 1 - 4 = - 2
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
What is the slope of the line that contains the points ( 1, 3 ) and ( 4, -3 ) ?
ক.✓ সঠিক উত্তর
-2
খ.
-0.5
গ.
1
ঘ.
2
ব্যাখ্যা
Slope of the line = 3 - ( - 3) / 1 - 4 = - 2
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৪২
৪২
The price of corn rose 20% two years ago and 15% last year . what is the combined percent increase in price ?
ক.
5%
খ.
17.5%
গ.
25%
ঘ.
35%
ব্যাখ্যা
Combined Percent = p + q + pq/100
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
The price of corn rose 20% two years ago and 15% last year . what is the combined percent increase in price ?
ক.
5%
খ.
17.5%
গ.
25%
ঘ.
35%
ব্যাখ্যা
Combined Percent = p + q + pq/100
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৪৩
৪৩
A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in :
ক.
20 days
খ.✓ সঠিক উত্তর
22.5 days
গ.
25 days
ঘ.
30 days
ব্যাখ্যা
Let, A can finish the job in x days
বিষয়: গণিতটপিক: সময় ও কাজ (Time and work)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in :
ক.
20 days
খ.✓ সঠিক উত্তর
22.5 days
গ.
25 days
ঘ.
30 days
ব্যাখ্যা
Let, A can finish the job in x days
বিষয়: গণিতটপিক: সময় ও কাজ (Time and work)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৪৪
৪৪
Riaz spent 20% of his income on taxes and 20% of the remainder on rent . What percent of his income has he spent on rent ?
ক.
12
খ.
14
গ.✓ সঠিক উত্তর
16
ঘ.
18
ব্যাখ্যা
Lets,
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
Riaz spent 20% of his income on taxes and 20% of the remainder on rent . What percent of his income has he spent on rent ?
ক.
12
খ.
14
গ.✓ সঠিক উত্তর
16
ঘ.
18
ব্যাখ্যা
Lets,
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৪৫
৪৫
75% of students of a class answered Question No. 1 correct and 55% answered Question No. 1 correct and 20% answered neither question correctly . What percent of students answered both question correctly ?
ক.
20%
খ.
25%
গ.
35%
ঘ.
45%
ব্যাখ্যা
Students answer Q.1 or Q.2 or both correctly = ( 100 - 20) = 80%
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
75% of students of a class answered Question No. 1 correct and 55% answered Question No. 1 correct and 20% answered neither question correctly . What percent of students answered both question correctly ?
ক.
20%
খ.
25%
গ.
35%
ঘ.
45%
ব্যাখ্যা
Students answer Q.1 or Q.2 or both correctly = ( 100 - 20) = 80%
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৪৬
৪৬
The taxicab charges TK. 4.60 for the first 0.2 mile of a trip and TK. 1.20 for each of 0.2 of a mile or a part thereof . If the trip is 2.5 miles one way and the waiting charge is TK. 7.50 for 30 minutes or part thereof . What will be the fare for a roun
ক.
50
খ.✓ সঠিক উত্তর
55
গ.
60
ঘ.
6.50
ব্যাখ্যা
Total distance traveled = 2.5 × 2 = 5 miles
বিষয়: গণিতটপিক: ঐকিক নিয়ম (Unitary method)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
The taxicab charges TK. 4.60 for the first 0.2 mile of a trip and TK. 1.20 for each of 0.2 of a mile or a part thereof . If the trip is 2.5 miles one way and the waiting charge is TK. 7.50 for 30 minutes or part thereof . What will be the fare for a roun
ক.
50
খ.✓ সঠিক উত্তর
55
গ.
60
ঘ.
6.50
ব্যাখ্যা
Total distance traveled = 2.5 × 2 = 5 miles
বিষয়: গণিতটপিক: ঐকিক নিয়ম (Unitary method)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৪৭
৪৭
How many squares are there in a chess board if each player has got 16 pawns to play with ?
ক.
64
খ.
128
গ.✓ সঠিক উত্তর
204
ঘ.
256
ব্যাখ্যা
Normally a chess board has 8 pawns and its squares are 82 or 64.
বিষয়: গণিতটপিক: পরিমিতি (Mensuration)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
How many squares are there in a chess board if each player has got 16 pawns to play with ?
ক.
64
খ.
128
গ.✓ সঠিক উত্তর
204
ঘ.
256
ব্যাখ্যা
Normally a chess board has 8 pawns and its squares are 82 or 64.
বিষয়: গণিতটপিক: পরিমিতি (Mensuration)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৪৮
৪৮
Two planes leave the airport at the same time . Minutes later, plane A is 33 miles due north of the airport and plane B is 56 miles due east of the airport . How far apart are the two planes ?
ক.
82
খ.
119
গ.✓ সঠিক উত্তর
65
ঘ.
93
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
Two planes leave the airport at the same time . Minutes later, plane A is 33 miles due north of the airport and plane B is 56 miles due east of the airport . How far apart are the two planes ?
ক.
82
খ.
119
গ.✓ সঠিক উত্তর
65
ঘ.
93
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৪৯
৪৯
If the length and width of a rectangle garden plot were each increased by 20% , what would be the percent increase in the area of plot ?
ক.
20%
খ.
24%
গ.
36%
ঘ.
40%
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
If the length and width of a rectangle garden plot were each increased by 20% , what would be the percent increase in the area of plot ?
ক.
20%
খ.
24%
গ.
36%
ঘ.
40%
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫০
৫০
if x>0 and , then what is the value of y in terms of x?
ক.
খ.
গ.
ঘ.
ব্যাখ্যা
To find the value of y in terms of x, let's solve the given equation:
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
if x>0 and , then what is the value of y in terms of x?
ক.
খ.
গ.
ঘ.
ব্যাখ্যা
To find the value of y in terms of x, let's solve the given equation:
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫১
৫১
If x =-1, then =?
ক.✓ সঠিক উত্তর
খ.
গ.
ব্যাখ্যা
Given that, x =-1
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
If x =-1, then =?
ক.✓ সঠিক উত্তর
খ.
গ.
ব্যাখ্যা
Given that, x =-1
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫২
৫২
If x =5 , what is the value of (
ক.
5
খ.
25
গ.
125
ঘ.✓ সঠিক উত্তর
625
ব্যাখ্যা
Let's substitute the value of x = 5 into the given expression:
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
If x =5 , what is the value of (
ক.
5
খ.
25
গ.
125
ঘ.✓ সঠিক উত্তর
625
ব্যাখ্যা
Let's substitute the value of x = 5 into the given expression:
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫৩
৫৩
A cube has a volume of 8 . If each side is doubled is length, what will be its new volume ?
ক.
16
খ.
24
গ.
32
ঘ.
48
ব্যাখ্যা
The volume of a cube is calculated by cubing the length of its sides. If each side is doubled in length, the new volume can be found by cubing the new side length.
বিষয়: গণিতটপিক: পরিমিতি (Mensuration)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
A cube has a volume of 8 . If each side is doubled is length, what will be its new volume ?
ক.
16
খ.
24
গ.
32
ঘ.
48
ব্যাখ্যা
The volume of a cube is calculated by cubing the length of its sides. If each side is doubled in length, the new volume can be found by cubing the new side length.
বিষয়: গণিতটপিক: পরিমিতি (Mensuration)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫৪
৫৪
How many degrees does a minute hand move in 20 minutes?
ক.
খ.✓ সঠিক উত্তর
গ.
ঘ.
ব্যাখ্যা
The minute hand of a clock completes a full revolution of 360 degrees in 60 minutes, which means it moves 360 degrees in an hour.
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
How many degrees does a minute hand move in 20 minutes?
ক.
খ.✓ সঠিক উত্তর
গ.
ঘ.
ব্যাখ্যা
The minute hand of a clock completes a full revolution of 360 degrees in 60 minutes, which means it moves 360 degrees in an hour.
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫৫
৫৫
ক.
45
খ.
20
গ.✓ সঠিক উত্তর
25
ঘ.
600
ব্যাখ্যা
To calculate √150 + √150, we need to find the square root of 150 and then add it to itself.
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
ক.
45
খ.
20
গ.✓ সঠিক উত্তর
25
ঘ.
600
ব্যাখ্যা
To calculate √150 + √150, we need to find the square root of 150 and then add it to itself.
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫৬
৫৬
In the figure , AB and AC are radii of two circles. Length of BC is 6. If AB = 4, what is AC? AC is tangent to the circle with centre B.
ক.✓ সঠিক উত্তর
খ.
5.5
গ.
ঘ.
বিষয়: গণিতটপিক: বৃত্ত (Circle)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
In the figure , AB and AC are radii of two circles. Length of BC is 6. If AB = 4, what is AC? AC is tangent to the circle with centre B.
ক.✓ সঠিক উত্তর
খ.
5.5
গ.
ঘ.
বিষয়: গণিতটপিক: বৃত্ত (Circle)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫৭
৫৭
'Palgiarism' is
ক.✓ সঠিক উত্তর
the act of using someone else's ideas as one's own
খ.
the act of planning everything beforehand
গ.
the art of pottery
ঘ.
the art of playing a musical instrument
বিষয়: ইংরেজিটপিক: Substitutionsরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
'Palgiarism' is
ক.✓ সঠিক উত্তর
the act of using someone else's ideas as one's own
খ.
the act of planning everything beforehand
গ.
the art of pottery
ঘ.
the art of playing a musical instrument
বিষয়: ইংরেজিটপিক: Substitutionsরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫৮
৫৮
Choose the correct one :
ক.✓ সঠিক উত্তর
In spite of my illness, attended the meeting
খ.
Despite of my illness, attended the meeting
গ.
In spite my illness, attend the meeting
ঘ.
Despite my illness, I had attended the meeting
বিষয়: ইংরেজিটপিক: Correctionsরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
Choose the correct one :
ক.✓ সঠিক উত্তর
In spite of my illness, attended the meeting
খ.
Despite of my illness, attended the meeting
গ.
In spite my illness, attend the meeting
ঘ.
Despite my illness, I had attended the meeting
বিষয়: ইংরেজিটপিক: Correctionsরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫৯
৫৯
Before adapting to changes in value , many prefer to ___, to ___ the universally agreed on principles that have been upheld for centuries .
ক.
innovate .... protect
খ.✓ সঠিক উত্তর
resist ... defend
গ.
ponder .... subvert
ঘ.
vacillate ..... publicize
বিষয়: ইংরেজিটপিক: Right Form of Verbsরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
Before adapting to changes in value , many prefer to ___, to ___ the universally agreed on principles that have been upheld for centuries .
ক.
innovate .... protect
খ.✓ সঠিক উত্তর
resist ... defend
গ.
ponder .... subvert
ঘ.
vacillate ..... publicize
বিষয়: ইংরেজিটপিক: Right Form of Verbsরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৬০
৬০
Which of the following is would be analogous to "Refinery Petroleum" ?
ক.✓ সঠিক উত্তর
mill : grain
খ.
mine : ore
গ.
warehouse : merchandise
ঘ.
generator : electricity
বিষয়: ইংরেজিটপিক: Analogyরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
Which of the following is would be analogous to "Refinery Petroleum" ?
ক.✓ সঠিক উত্তর
mill : grain
খ.
mine : ore
গ.
warehouse : merchandise
ঘ.
generator : electricity
বিষয়: ইংরেজিটপিক: Analogyরেফারেন্স: Bangladesh Bank - Assistant Director - 2011