Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009

মোট প্রশ্ন: ৫৯

পূর্ববর্তীপৃষ্ঠা এর
৪১

What should be added with 15480 to make it exactly divisible by 14 ?

.
7
.
8
.
4
✓ সঠিক উত্তর
.
6

ব্যাখ্যা

Here,  15480 ÷ 14 = 1105; remainder = 10
বিষয়: গণিতরেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৪২

Selim deposited a total of taka 120,000 in two savings accounts for one year. One account offered him 8% interest and the other 10% . If he earned taka 10,000 as interest, how much did he deposit at 8% ?

.
TK. 10,000
.
TK. 100,000
✓ সঠিক উত্তর
.
TK. 70,000
.
TK. 20,000

ব্যাখ্যা

Let the amount deposited at 8% and 10% interest be X and (120000 - X) respectively.
বিষয়: গণিতটপিক: সরল ও যৌগিক মুনাফা  (Simple & Compound interest)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৪৩

If the purchasing price of 15 apples and selling price of 12 apples are the same then how much is the gain in percentage form ?

.
33.33%
.
15%
.
20%
.
25%
✓ সঠিক উত্তর

ব্যাখ্যা

Purchasing price of each apple = 1/15 
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৪৪

Farhana deposited TK.10,000 in a Bank at 13.25% interest rate compounded annually. At the end of the second year, the total amount including interest will become how much ?

.
TK.12,826
✓ সঠিক উত্তর
.
TK. 11,844
.
TK. 13,000
.
TK. 14,826

ব্যাখ্যা

C = P(1 + r/n)nt [C = principal with interest, P = principal, r = rate of interest, n = number of times interest is compounded per time period, t = number of time periods]
বিষয়: গণিতটপিক: সরল ও যৌগিক মুনাফা  (Simple & Compound interest)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৪৫

A bookseller can gain 6.666% if he offers a 20% commission on the written selling price of a book. If the commission is reduced to 10% , what will be his gain ?

.
15%
.
10%
.
20%
✓ সঠিক উত্তর
.
25%

ব্যাখ্যা

Let the  actual and written price be A and S respectively.
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৪৬

Which of the following fractions is smaller than 8/9 and greater than 2/5 ?

.
3/7
✓ সঠিক উত্তর
.
3/8
.
7/18
.
9/23

ব্যাখ্যা

8/9=0.88
বিষয়: গণিতটপিক: ভগ্নাংশ (Fraction)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৪৭

If the sum of (8, 5 and x ) is 21, then the average of (8, 5 and x ) is -

.
7
✓ সঠিক উত্তর
.
9
.
2
.
3.5
বিষয়: গণিতটপিক: গড় (Average)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৪৮

Six years from now the combined age of father and son will be 54. If, currently , son is 5 times younger than his father then what is the present age of the father ?

.
30
.
40
.
35
✓ সঠিক উত্তর
.
45

ব্যাখ্যা

Let the present age of son and his father be S and 5S respectively. Six years from now, their ages will be (S + 6) and (5S + 6) respectively.
বিষয়: গণিতটপিক: বয়স (Ages)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৪৯

A watermelon is divided into 18 equal pieces. If Naz takes 1/3 of the watermelon and Sarah takes 1/3 of the rest that are left, how many pieces are still left ?

.
4
.
6
.
8
✓ সঠিক উত্তর
.
10

ব্যাখ্যা

Naz takes = 1/3 of 18 = 6 pieces
বিষয়: গণিতরেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৫০

50% of the people in an area read Ittefaq and 60% of the people in that area read Prothom Alo. 20% people read both the newspapers. What percent of people do not read any of the newspapers ?

.
20
.
10
✓ সঠিক উত্তর
.
15
.
25

ব্যাখ্যা

Total = Ittefaq + Prothom Alo - Both + None
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৫১

A 240-meter long train crosses a pole in a platform in 8 seconds . Determine the speed of the train in km/hr.

.
120
.
140
.
6
.
3

ব্যাখ্যা

Velocity = Distance / time = 240 m / 8 sec = 30 m/s
বিষয়: গণিতটপিক: ট্রেন ও  গতিবেগ (Train & Speed)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৫২

If 6 workers can complete 1 identical job in 3 days, how long (in days) will it take 4 workers to complete 10 such jobs ?

.
5
✓ সঠিক উত্তর
.
4
.
6
.
3
বিষয়: গণিতটপিক: সময় ও কাজ (Time and work)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৫৩

A form sorting machine can sort 12 forms in 10 minutes. How many forms can it sort in one and half hours at this rate ?

.
150
.
158
.
152
.
108
✓ সঠিক উত্তর

ব্যাখ্যা

One and half hours = 90 minutes
বিষয়: গণিতরেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৫৪

The average of 100 observations in a study was calculated as 49.7 . Later it was revealed that one of the observations was misread as 64 instead of 94. What will be the correct average ?

.
52.5
.
49.8
.
55
.
50
✓ সঠিক উত্তর

ব্যাখ্যা

The erroneous total of the obsevations = 49.7 x 100 = 4970
বিষয়: গণিতটপিক: গড় (Average)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৫৫

If you add up the digits of a three -digit number you get 18 . The ten's digit is twice the hundred's digit and the hundred's digit is 13 the unit's digit. What is the number?

.
246
.
369
✓ সঠিক উত্তর
.
531
.
855
বিষয়: গণিতরেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৫৬

People use Sedan car and Micro bus for only personal usage . Of all the automobiles sold during that period what percent will be used solely for personal usage?

.
70%
.
74.22%
.
75.52%
✓ সঠিক উত্তর
.
68.94%
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৫৭

what is the difference between the percentage sales of Bus and Truch in Dhaka region ?

.
1.36%
.
2.25%
.
0.50%
✓ সঠিক উত্তর
.
1.25%
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৫৮

what should be added with 15480 to make it exactly divisible by 14?

.
7
.
8
.
4
✓ সঠিক উত্তর
.
6
বিষয়: গণিতরেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009
৫৯

If a, b, and c are consecutive integers and aabc3 is an integer III. (b-c)=1

.
I only
.
II only
✓ সঠিক উত্তর
.
III only
.
I and II only
বিষয়: গণিতটপিক: সমীকরণের প্রয়োগ (Application of Equation)রেফারেন্স: Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009