Bangladesh Bank - Assistant Director - 2016

মোট প্রশ্ন: ৮৪

পূর্ববর্তীপৃষ্ঠা ২ এর ৫পরবর্তী
২১

Choose out the odd one.

ক.
IMF
খ.
SAARC
✓ সঠিক উত্তর
গ.
UNICEF
ঘ.
WHO
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2016
২২

Choose the number pair/group which is different from others .

ক.
50-66
খ.
32-48
গ.
64-88
ঘ.
63-77
✓ সঠিক উত্তর
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2016
২৩

If A = 26, SUN = 27, then CAT = ?

ক.
24
খ.
27
গ.
57
✓ সঠিক উত্তর
ঘ.
58
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2016
২৪

How many sons does X have ? I. Q and U are brothers of T. II. R is sister of P and U. III. Rand Tare daughters of X

ক.
Only I and II
খ.
Only II and III
গ.
All I , II and III
ঘ.
I, II and III together are not sufficient
✓ সঠিক উত্তর
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2016
২৫

If A + B = 2C and C + D = 2A , then

ক.
A + C = B + D
✓ সঠিক উত্তর
খ.
A + C = 2D
গ.
A + D = B + C
ঘ.
A + C = 2B

ব্যাখ্যা

A + B = 2C
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2016
২৬

Arrange the following in a logical order : 1. Euphoria 2. Happiness 3. Ambivalence 4. Ecstasy 5. Pleasure

ক.
1, 4, 2, 5,3
খ.
2,1, 3, 4, 5
গ.
3, 2, 5, 1, 4
✓ সঠিক উত্তর
ঘ.
4, 1, 3, 2, 5
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2016
২৭

In a class of 60, where girls are twice that of boys , Kamal ranked seventeenth from the top . If there are 9 girls ahead of Kamal , how many boys are after him in rank ?

ক.
3
খ.
7
গ.
12
✓ সঠিক উত্তর
ঘ.
23

ব্যাখ্যা

Let, No. of boys = x
As per question,
x + 2x = 60
∴ x = 20

∴ No. of boys = 20 and No. of girls = 40

As Kamal ranked 17th from the top, so there are 16 students ahead of him (including 9 girls).
that means, there are 7 boys and 9 girls ahead of Kamal.

Now, till 17th there are (7 boys + Kamal) = 8 boys
So, remaining boys that ranked after Kamal = (20-8) = 12 boys (Ans:)
 
বিষয়: গণিতটপিক: সম্ভাব্যতা (Probability)রেফারেন্স: Bangladesh Bank - Assistant Director - 2016
২৮

A, B and C are sisters . D is the brother of E . and E is the Daughter of B. How is A related to D ?

ক.
Sister
খ.
Cousin
গ.
Niece
ঘ.
Aunt
✓ সঠিক উত্তর
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2016
২৯

The smallest 6-digit number exactly divisible by 111 is

ক.
111111
খ.
110011
গ.
100011
✓ সঠিক উত্তর
ঘ.
110101

ব্যাখ্যা

The smallest 6 - digit number is 100000
On dividing 100000 by 111, we get 100 as remainder.
So, the number to be added = (111 - 100) = 11
Hence, the required number = 100011
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2016
৩০

The ratio of two numbers is 3:4 and their H.C.F. is 4 . Their L.C.M. is :

ক.
12
খ.
16
গ.
24
ঘ.
48
✓ সঠিক উত্তর

ব্যাখ্যা

Let the numbers be 3x and 4x. Then, their H.C.F. = x. So, x = 4
So, the numbers 12 and 16
L.C.M. of 12 and 16 = 48
বিষয়: গণিতটপিক: অনুপাত-সমানুপাত (Ratio-Proportion)রেফারেন্স: Bangladesh Bank - Assistant Director - 2016
৩১

What decimal of an hour is a second ?

ক.
0.0025
খ.
0.0256
গ.
0.00027
✓ সঠিক উত্তর
ঘ.
0.000126
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2016
৩২

What mathematical operation should come at the place of '?' in the equation : 2 ? 6 - 12 ÷ 4 + 2 = 11

ক.
+
খ.
-
গ.
×
✓ সঠিক উত্তর
ঘ.
÷

ব্যাখ্যা

(2 x 6 ) - (12 ÷ 4 ) + 2 = 11
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2016
৩৩

The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers ?

ক.
2
খ.
5
গ.
8
✓ সঠিক উত্তর
ঘ.
None of these

ব্যাখ্যা

Let the numbers be x, x + 2, x + 4, x + 6 and x + 8.
বিষয়: গণিতটপিক: গড় (Average)রেফারেন্স: Bangladesh Bank - Assistant Director - 2016
৩৪

Two numbers are such that the ratio between them is 4:7 . If each is increased by 4, the ratio becomes 3:5 . The larger number is :

ক.
36
খ.
48
গ.
56
✓ সঠিক উত্তর
ঘ.
64
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2016
৩৫

A person's present age is two-fifth of the age of his mother. After 8 years , he will be one-half of the age of his mother . How old is the mother at present ?

ক.
32 years
খ.
36 years
গ.
40 years
✓ সঠিক উত্তর
ঘ.
48 years
বিষয়: গণিতটপিক: বয়স (Ages)রেফারেন্স: Bangladesh Bank - Assistant Director - 2016
৩৬

If 25% of a number is subtracted from a second number, the second number reduces to its five-sixth .What is the ratio of the first number to the second number ?

ক.
1:3
খ.
2:3
✓ সঠিক উত্তর
গ.
3:2
ঘ.
None of these
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2016
৩৭

The ages of A and B are in the ratio 3:1 . Fifteen years hence , the ratio will be 2:1 . Their present ages are :

ক.
30 years , 10 years
খ.
45 years , 15 years
✓ সঠিক উত্তর
গ.
21 years , 7 years
ঘ.
60 years , 20 years
বিষয়: গণিতটপিক: অনুপাত-সমানুপাত (Ratio-Proportion)রেফারেন্স: Bangladesh Bank - Assistant Director - 2016
৩৮

Aunik, Kamal and Jamal invested TK. 8000, TK. 4000 and TK. 8000 respectively in a business . Aunik left after six months. If after eight months, there was a gain of TK. 4005, then what will be the share of Kamal ?

ক.
TK. 890
✓ সঠিক উত্তর
খ.
TK. 1335
গ.
TK. 1602
ঘ.
TK. 1780

ব্যাখ্যা

Aunik's share=8000×6=48000 [as he left after 6 months]
Kamal's share=4000×8=32000
Jamal's share=8000×8=64000
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2016
৩৯

15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take , if 3 women do as much work as 2 men ?

ক.
18
খ.
20
গ.
25
ঘ.
30
✓ সঠিক উত্তর

ব্যাখ্যা

3 women can do as much work as 2 men
বিষয়: গণিতটপিক: ঐকিক নিয়ম (Unitary method)রেফারেন্স: Bangladesh Bank - Assistant Director - 2016
৪০

A is 30% more efficient than B . How much time will they, working together , take to-complete a job which A alone could have done in 23 days ?

ক.
11 days
খ.
13 days
✓ সঠিক উত্তর
গ.
21 days
ঘ.
None of these
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2016
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