Bangladesh Bank - Assistant Director - 2011

মোট প্রশ্ন: ৮৫

৪১

What is the slope of the line that contains the points ( 1, 3 ) and ( 4, -3 ) ?

.
-2
✓ সঠিক উত্তর
.
-0.5
.
1
.
2

ব্যাখ্যা

Slope of the line = 3 - ( - 3) / 1 - 4 = - 2
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৪২

The price of corn rose 20% two years ago and 15% last year . what is the combined percent increase in price ?

.
5%
.
17.5%
.
25%
.
35%

ব্যাখ্যা

Combined Percent = p + q + pq/100
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
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 :

.
20 days
.
22.5 days
✓ সঠিক উত্তর
.
25 days
.
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

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 ?

.
12
.
14
.
16
✓ সঠিক উত্তর
.
18

ব্যাখ্যা

Lets,
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
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 ?

.
20%
.
25%
.
35%
.
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

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

.
50
.
55
✓ সঠিক উত্তর
.
60
.
6.50

ব্যাখ্যা

Total distance traveled = 2.5 × 2 = 5 miles
বিষয়: গণিতটপিক: ঐকিক নিয়ম (Unitary method)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৪৭

How many squares are there in a chess board if each player has got 16 pawns to play with ?

.
64
.
128
.
204
✓ সঠিক উত্তর
.
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

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 ?

.
82
.
119
.
65
✓ সঠিক উত্তর
.
93
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
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 ?

.
20%
.
24%
.
36%
.
40%
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫০

if x>0 and yx=x, , then what is the value of y in terms of x?

.
1x
.
x
.
xx
.
x2x

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

If x =-1, then x4-x3+x2x-1=?

.
-32
✓ সঠিক উত্তর
.
-12
.
12

ব্যাখ্যা

Given that,  x =-1
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫২

If x =5 , what is the value of (x7÷x5×x2)?

.
5
.
25
.
125
.
625
✓ সঠিক উত্তর

ব্যাখ্যা

Let's substitute the value of x = 5 into the given expression:
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫৩

A cube has a volume of 8M3 . If each side is doubled is length, what will be its new volume ?

.
16M3
.
24M3
.
32M3
.
48M3

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

How many degrees does a minute hand move in 20 minutes?

.
20°
.
120°
✓ সঠিক উত্তর
.
60°
.
100°

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

150+150=?

.
45
.
20
.
25
✓ সঠিক উত্তর
.
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

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.

.
25
✓ সঠিক উত্তর
.
5.5
.
35
.
32
বিষয়: গণিতটপিক: বৃত্ত (Circle)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫৭

'Palgiarism' is

.
the act of using someone else's ideas as one's own
✓ সঠিক উত্তর
.
the act of planning everything beforehand
.
the art of pottery
.
the art of playing a musical instrument
বিষয়: ইংরেজিটপিক: Substitutionsরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫৮

Choose the correct one :

.
In spite of my illness, attended the meeting
✓ সঠিক উত্তর
.
Despite of my illness, attended the meeting
.
In spite my illness, attend the meeting
.
Despite my illness, I had attended the meeting
বিষয়: ইংরেজিটপিক: Correctionsরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৫৯

Before adapting to changes in value , many prefer to ___, to ___ the universally agreed on principles that have been upheld for centuries .

.
innovate .... protect
.
resist ... defend
✓ সঠিক উত্তর
.
ponder .... subvert
.
vacillate ..... publicize
বিষয়: ইংরেজিটপিক: Right Form of Verbsরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৬০

Which of the following is would be analogous to "Refinery Petroleum" ?

.
mill : grain
✓ সঠিক উত্তর
.
mine : ore
.
warehouse : merchandise
.
generator : electricity
বিষয়: ইংরেজিটপিক: Analogyরেফারেন্স: Bangladesh Bank - Assistant Director - 2011