Bangladesh Bank - Assistant Director - 2013

মোট প্রশ্ন: ৯৮

৬১

Which of the following is equal to 456*(72)+28*(456) ?

.
72*(456+28)
.
456*(72+28)
✓ সঠিক উত্তর
.
(456+28)*(456+72)
.
(28+456)*(72+456)

ব্যাখ্যা

456* (72) + 28*( 456)
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৬২

The lengths of the sides of a triangle are in the ratio of 3 to 5 to 6 . If the perimeter of the triangle is 70, what is the length of the longest side ?

.
5
.
6
.
15
.
25

ব্যাখ্যা

Let, the side of a triangle are 3x, 5x, and 6x
বিষয়: গণিতটপিক: অনুপাত-সমানুপাত (Ratio-Proportion)রেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৬৩

How many "8" will you pass on the way when you count from 1 to 100 ?

.
11
.
20
✓ সঠিক উত্তর
.
80
.
70

ব্যাখ্যা

1 to 100 "8" will come : 8, 18, 28, 38, 48, 58, 68, 78, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 98 = 20
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৬৪

A father said to this son, "I was as old as you are at the present at the time of your birth". If the father's age is 38 years now, the son's age five year's back was :

.
14
✓ সঠিক উত্তর
.
19
.
33
.
38

ব্যাখ্যা

Let, sons present age = x years
বিষয়: গণিতটপিক: বয়স (Ages)রেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৬৫

In a group of people solicited by a charity, 30% contributed TK. 40 each, 45% contributed TK. 20 each and the rest contributed TK. 12 each. What percentage of the total amount came from people who gave TK. 40 each ?

.
25%
.
30%
.
40%
.
45%

ব্যাখ্যা

Let, total participant = 100
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৬৬

A manufacturer of pickles wants to make a profit of TK. 75 when he sells 300 jars of pickles. It costs TK. 0.65 each to make the first 100 jars of pickles and TK. 0.55 each to make after the first 100. What price should he charge for the 300 jars of pickles ?

.
TK. 75
.
TK. 175
.
TK. 225
.
TK. 240

ব্যাখ্যা

First 100 jars cost = 100×.56 = 56Tk.
বিষয়: গণিতটপিক: লাভ-ক্ষতি (Profit and loss)রেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৬৭

A students first reduced a number by 20% and then increased it again by 20% . If the difference between the last number and the original number is 8, then the original number was :

.
200
✓ সঠিক উত্তর
.
250
.
300
.
450

ব্যাখ্যা

Let, the original number = 100
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৬৮

35% of Tahia's income is equal to 25% of Nona's income . The ratio of Tahia's income to Noria's income is :

.
7:5
.
4:3
.
4:7
.
5:7
✓ সঠিক উত্তর

ব্যাখ্যা

Let, Tahias income = x and
বিষয়: গণিতটপিক: অনুপাত-সমানুপাত (Ratio-Proportion)রেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৬৯

A watch which gains 5 seconds in 3 minutes was set right at 7am . In the afternoon of the same day when the true time is 1 pm, the watch will indicate :

.
1:10pm
✓ সঠিক উত্তর
.
12:55pm
.
1:05pm
.
1:08pm

ব্যাখ্যা

The time difference = 1pm - 7 pm = 6 hour = 360 minutes
বিষয়: গণিতটপিক: ঘড়ি (Watch)রেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৭০

Which of these numbers are least like the others : 3, 5, 11, 14, 17, 21.

.
5
.
11
.
14
✓ সঠিক উত্তর
.
17

ব্যাখ্যা

Among the number , 3, 5, 11, 14, 17, 21, Except 14 others are odd number
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৭১

Insert the missing number : 16, 33, 67, 135, 271, (...)

.
371
.
406
.
451
.
505

ব্যাখ্যা

Here, next number = previous no × 2) + 1
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৭২

The numbers 13,7 and 11 would enjoy the company of which of these numbers : 10, 15, 17, 12, 18 ?

.
10
.
15
.
17
✓ সঠিক উত্তর
.
12

ব্যাখ্যা

Here, 13, 7 and 11 are prime number
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৭৩

Lucky is to fortunate as weak is to _____________.

.
humble
.
obsolete
.
legitimate
.
fragile
✓ সঠিক উত্তর
বিষয়: ইংরেজিটপিক: Infinitivesরেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৭৪

Which one of the following five designs is least like the other four?

বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৭৫

What is the next item in the sequence ? Choose from right.

বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৭৬

What is the next item in the sequence ? Choose from right.

বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৭৭

The invigilator made us ___ our identity card at the test center .

.
showing
.
show
✓ সঠিক উত্তর
.
showed
.
to show
বিষয়: ইংরেজিটপিক: Sentence Completionরেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৭৮

For an investor who _____ money , silver or bond are good options .

.
has so little a
.
has very little
✓ সঠিক উত্তর
.
has so few
.
has very few
বিষয়: ইংরেজিটপিক: Uncountable Nounরেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৭৯

One should be careful about ____ duty .

.
his
.
her
.
one's
✓ সঠিক উত্তর
.
the
বিষয়: ইংরেজিটপিক: Subject-Verb Agreementরেফারেন্স: Bangladesh Bank - Assistant Director - 2013
৮০

Municipal taxes are based on 'an estimate of the value' of one's property .

.
an appraisal
.
a forecast
✓ সঠিক উত্তর
.
a prediction
.
an outline
বিষয়: ইংরেজিটপিক: Substitutionsরেফারেন্স: Bangladesh Bank - Assistant Director - 2013