It is necessary to_ standards are maintained?🔗 বিস্তারিত
ক insure
খ influence
গ ensure
ঘ control
✅ সঠিক উত্তর: ensure
উত্তর: ensure
6
Two lots of onions with equal quantity, one costing Tk. 10 per kg and the other costing Tk. 15 per kg are mixed together and whole lot is sold at Tk. 15 per kg . What is the profit or loss?🔗 বিস্তারিত
ক 10% loss
খ 10 % profit
গ 20% loss
ঘ 20% profit
✅ সঠিক উত্তর: 20% profit
উত্তর: 20% profit
7
In covering a certain distance , the speeds of A and B are in the ratio of 3 : 4. A takes 30 minutes more than B to reach the destination. The time taken by A to reach the destination is?🔗 বিস্তারিত
ক 1.0 hour
খ 2.0 hours
গ 1.5 hours
ঘ 2.5 hours
✅ সঠিক উত্তর: 2.0 hours
উত্তর: 2.0 hours
8
A person rides a bicycle round a circular path of radius 50 m. The radious of the wheel of the bicycle is 50 cm. The cycle comes to the starting point for the first time in 1 hour. what is the number of revolutions of the revolutions of the wheel in 15 minutes?🔗 বিস্তারিত
ক 20
খ 25
গ 30
ঘ 35
✅ সঠিক উত্তর: 25
উত্তর: 25
9
Two circles of equal radii touch externally at a point P . Form a point T on the target at P target TQ and TR are drawn to the circles with points of contact Q and R respectively. The relations of TQ and TR is?🔗 বিস্তারিত
ক T = TR
খ TQ> TR
গ TQ = TR
ঘ TQ = 2 Tk
✅ সঠিক উত্তর: TQ = TR
উত্তর: TQ = TR
10
The diameters of two circles are the side of a square and the diagonal of the square. The ratio of the areas of the smaller circle and the larger circle is?🔗 বিস্তারিত
A and B are partners in a business A contributes 1/4 of the capital for 15 months and B receives 2.3 of the profit . Find for how long B’s money was used?🔗 বিস্তারিত
ক 6 months
খ 10 months
গ 8 months
ঘ 12 months
✅ সঠিক উত্তর: 10 months
উত্তর: 10 months
52
If 6 men and 8 boys can do a piece of work in 10 days and 26 men and 48 boys can do the same in 2 days , the time taken by 15 men and 20 boys to do the same type of work will be?🔗 বিস্তারিত
ক 4 days
খ 5 days
গ 6 days
ঘ 7 days
✅ সঠিক উত্তর: 4 days
উত্তর: 4 days
53
Pipe A alone can fill a tankin 8 hours .Pipe B can fill it in 6 hours . If both the pipes are operated and after 2 hours pipe A is closed, then the other pipe will fill the tank in?🔗 বিস্তারিত
ক 6 hours
খ 4 hours
গ 3 1/2 hours
ঘ 1 1/2 hours
✅ সঠিক উত্তর: 1 1/2 hours
উত্তর: 1 1/2 hours
54
A train of length 150 m takes 10 seconds to cross another train 100 m long coming from the opposite direction . If the speed of first train is 30 km / hr, what is the speed of second train?🔗 বিস্তারিত
ক 48km /hr
খ 54 km / hr
গ 60 km / hr
ঘ 72 km / hr
✅ সঠিক উত্তর: 60 km / hr
উত্তর: 60 km / hr
55
In an acute angled traingle ABC ,if sin 2 (A + B – C) =1 and tan ( B + C-A)=3 , then the value of angle B is?🔗 বিস্তারিত
ক 52%
খ 60=0%
গ 30%
ঘ 67%
✅ সঠিক উত্তর: 52%
উত্তর: 52%
56
Consider the following variable declarations and definations in C . (i) int var _ 9 =1 ; (ii) int 9 _ var =2; (iii) int + =3; Choose the correct statement w.r.t above variables?🔗 বিস্তারিত
ক Both i. and ii. are valid
খ Only i. is valid
গ Both i. & iii. are valid
ঘ All of these
✅ সঠিক উত্তর: Both i. & iii. are valid
উত্তর: Both i. & iii. are valid
57
For a given integer, which of the following operators can be used to ‘Set’ and ‘reset ‘ a particular bit respectively?🔗 বিস্তারিত
ক I and &
খ && and II
গ & and I
ঘ II and &&
✅ সঠিক উত্তর: I and &
উত্তর: I and &
58
Let x be an integer which can take a value of 0 or 1. The statement if (x == 0) x =1 ; else x =0 ; is equivalent to which one of the following?🔗 বিস্তারিত
ক x = 1 +x ;
খ x =1 -x ;
গ x =x -1 ;
ঘ x = 1 % x;
✅ সঠিক উত্তর: x =x -1 ;
উত্তর: x =x -1 ;
59
which of the following is not a stable sorting algorithm in its typical implementation?🔗 বিস্তারিত
ক Insertion sort
খ Merge sort
গ Quick sort
ঘ Bubble sort
✅ সঠিক উত্তর: Quick sort
উত্তর: Quick sort
60
You have to sort 1 GB of data with only 100 MB of available main memory. Which sorting technique will be most appropriate?🔗 বিস্তারিত
ক Heap sort
খ Quick sort
গ Insertion sort
ঘ Merge Sort
✅ সঠিক উত্তর: Merge Sort
উত্তর: Merge Sort
61
Randomized quick sort is an extension of quicksort where the pivot is chosen randomly. what is the worst case complexity of sorting a numbers using randomized quick sort?🔗 বিস্তারিত
ক O (n)
খ O (n2)
গ O (n log n)
ঘ O (n!)
✅ সঠিক উত্তর: O (n2)
উত্তর: O (n2)
62
Consider the following recursive function fun (s , y). what is the value of fun ( 4, 3) int fun ( int x , int y) if ( x =0) return y; return fun ( x,1, x+y)?🔗 বিস্তারিত
ক 4
খ 5
গ 34
ঘ 13
✅ সঠিক উত্তর: 13
উত্তর: 13
63
The average Number of key comparisons done in a successful sequential search in a list of length it is?🔗 বিস্তারিত
ক log n
খ (n + 1)/2
গ (n -1) /2
ঘ n /2
✅ সঠিক উত্তর: (n + 1)/2
উত্তর: (n + 1)/2
64
In UNIX, processes that have finished execution but have not yet had their status collected are known as?🔗 বিস্তারিত
ক Steeping Processes
খ Stopped Processes
গ zombic Processes
ঘ Orphan Processes
✅ সঠিক উত্তর: zombic Processes
উত্তর: zombic Processes
65
In UNIX, the login prompt can be changed b changing the contents of the file?🔗 বিস্তারিত
ক gettydefs
খ contrab
গ init
ঘ inittab
✅ সঠিক উত্তর: gettydefs
উত্তর: gettydefs
66
which of the following UNIX command allows scheduling program to be executed at the specifics time?🔗 বিস্তারিত
ক nice
খ cron
গ date and time
ঘ schedule
✅ সঠিক উত্তর: cron
উত্তর: cron
67
which of the following is programming helps you to learn Android programming?🔗 বিস্তারিত
ক C
খ SQL
গ Java
ঘ Python
✅ সঠিক উত্তর: Java
উত্তর: Java
68
Which tool could be used for detecting vulnerability through SQl Injection?🔗 বিস্তারিত
ক minap
খ metasloit
গ bit defender
ঘ UML
✅ সঠিক উত্তর: bit defender
উত্তর: bit defender
69
Which of the following is not a standard synchronous communication protocol?🔗 বিস্তারিত
ক PAS
খ SDLC
গ SLIP
ঘ SMTP
✅ সঠিক উত্তর: PAS
উত্তর: PAS
70
Which of the standard protocol for network management features?🔗 বিস্তারিত
ক FTP
খ SNA
গ SNMP
ঘ SMTP
✅ সঠিক উত্তর: SNMP
উত্তর: SNMP
71
How many pairs of stations can simultaneously communicate on Ethernet LAN?🔗 বিস্তারিত
ক 1
খ 2
গ 3
ঘ 4
✅ সঠিক উত্তর: 1
উত্তর: 1
72
A path for carrying signals between a source and a destination is know as?🔗 বিস্তারিত
ক Router
খ Channel
গ Link
ঘ Block
✅ সঠিক উত্তর: Channel
উত্তর: Channel
73
In SQL, the_ command is used to recompile a view?🔗 বিস্তারিত
ক COMPILE VIEW
খ DEFINE VIEW
গ ALTER VIEW
ঘ CREATE VIEW
✅ সঠিক উত্তর: ALTER VIEW
উত্তর: ALTER VIEW
74
which of the following requires the most time in SDLC?🔗 বিস্তারিত