Solve

SOLVE

 1) Find the odd man out - 49,  81 ,100 ,144
A) 49
B) 81
C) 100
D) 144

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2)Which of the following numbers is different from others?
A) 3156
B) 4164
C) 5255
D) 6366

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3)Fill the blank
5,35,7,42,6 ,_____,9,36,4.
A) 45
B) 48
C) 54
D) 56 

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4)Find odd man out :DFEG,  JKLM,   GHIK,   RTSU
A) DFEG
B)JKLM
C)GHIK
D)RTSU

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5) find odd man out 1,3,10,21,64,129,256,778
1) 10
2) 21
3) 129
4) 256

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6)The missing number in the series is:
0 , 6 , 24 , 60 , 120 , ? , 336 is
A) 240
B) 220
C) 280
D)210

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7)Let a means minus (-) ,b means multiplied by (*), C means divided by (/) and D means plus(+).The value of 90 D 9 a 29 C 10 b 2
A) 8
B) 10
C) 12
D) 14

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8)If MOHAN is represented by the code KMFYL, then COUNT will be represented by
A) AMSLR
B) MSLR
C) MASRL
D)SAMLR

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9)  32     33      37    46     62    ?
Replace ? by
A)85
B) 87
C) 94
D) 99

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10)AZ       DW        GT       JQ     ? .Replace ? from following
A) LD
B) MN
C) MO
D) NM

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11) In certain code language ,PUNE is written as SXQH.How would you write DELHI in this language?
A )  FGNJL
B )  FGNJK
C )  GHOKM
D )  GHOKL

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12)Find odd man out:
A)  6
B ) 18
C )  24
D )  36

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13)Find the wrong term in the following series:
68    66     62    59     56    53
A)  59
B)  62
C)  66
D)  68

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14)If P is the brotherb of Q;Q is the son of R; Sis R's father .What is P of S?
A)  Son
B)  Brother
C)  Grandson
D)  Grandfather

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15) The missing number in the series 40 , 120 , 60 , 180 , 90 , ? , 135
A)  110
B)  270
C)  105
D)  210

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16) The length and breadth of  a rectangle are changed by +20% and by -10% respectively.What is the percentage change in the area of rectangle?
A)  10%
B)  12.5%
C)  8%
D)  15%

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17) Two pipes A and B can fill a tyank in 15 minutes and 20  minutes respectively .Both the pipes are opened together but after 4 minutes,pipe A is turned off. What is the total time required to fill the tank?
A) 10 min.40 sec
B) 11 min.45 sec
C) 12 min.30 sec
D)  14 min.40sec

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18)The odd number from 1 to 45 which are exactly divisible by 3 are arranged in an ascending order .The number at 6^th position is
A)  18
B)  24
C)  33
D)  36

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19) If the radius of a circle is increased by 50%, the perimeter of the circle will increase by

A) 30
B)  85/2
C)  170/3
D)  110

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20) In code language, the word BAD is written as 658 .In the same language, what could be the code for FIG?
A)  9         12       10
B) 10        13        11
C) 8          11       13
D) 10        12       13

More C++ programs

//Program to display Floyd triangle:-
#include<iostream.h>
main()
{
    int line,i,num=1,incr;
    cout<<" How many lines = ";
    cin>>line;
    cout<<"\n \n Floyds Triangle \n \n";
    for(i=1;i<=line;i++)
    {
        for(incr=1;incr<=i;incr++)
        {
            cout<<num;
            cout<<"\t";
            num++;
        }
        cout<<"\n";
    }
}

Output:-

How many lines = 7

Floyds triangle


1
2           3
4           5           6
7           8           9           10
11         12         13         1 4          15
16         17         18         19            20          21
22          23         24         25           26          27          28

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//Program to check whether number is prime or not:-

#include<iostream.h>
main()
{
    int num,temp=0,i;
    cout<<"\n Enter the number =";
    cin>>num;
    if(num>0)
    {
        for(i=2;i<=num-1;i++)
        {
            if(num%i==0)
            {
                cout<<"\n Number is not a Prime number \n \n";
                temp=1;
                break;
            }
        }
        if(temp==0)
        {
            cout<<"\n Number is Prime \n \n";
        }
    }
    else
        cout<<"Enter only Positive numbers";
}


Output:-

Enter the number = 7
Number is Prime

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//Program of destructors in c++:-

#include<iostream.h>
class ABC
{
int *width,*height;
public:
    ABC(int,int);
    ~ABC();
        int area()
    {
            return(*width**height);
    }
};
ABC::ABC(int a,int b)
{
width=new int;
height= new int;
*width=a;
*height=b;
}
ABC::~ABC()
{
    delete width;
    delete height;
   
}
main()
{
    ABC obj1(4,9),obj2(7,5);
    cout<<obj1.area();
    cout<<"\n";
    cout<<obj2.area();
}


Output :-
36
35

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//Program of static member variable and member function:
#include<iostream.h>
class ABC
{
private :static int data;
public: static void getdata()
        {
            ++data;
            cout<<"count is =";
            cout<<data<<"\n";
        }
     void putdata()
        {
            ++data;
            cout<<"now count is ="<<data<<"\n";
        }
 void newfunction()
{
++data;
cout<<"now count is ="<<data;
}
};
int ABC::data=5;
void main()
{
    ABC obj;
    ABC::getdata();
    obj.putdata();
    obj.newfunction();
}

Output:-
count is =6
now count is =7
now count is =8

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Solve the sums of Quiz

1) Find the odd man out - 49,  81 ,100 ,144

2)Which of the following numbers is different from others?
A) 3156
B) 4164
C) 5255
D) 6366

3)Fill the blank
5,35,7,42,6 ,_____,9,36,4.
A) 45
B) 48
C) 54
D) 56 

4)Find odd man out :DFEG,  JKLM,   GHIK,   RTSU

5) find odd man out 1,3,10,21,64,129,256,778
1) 10
2) 21
3) 129
4) 256

6)The missing number in the series is:
0 , 6 , 24 , 60 , 120 , ? , 336 is
A) 240     B) 220     C) 280         D)210


7)Let a means minus (-) ,b means multiplied by (*), C means divided by (/) and D means plus(+).The value of 90 D 9 a 29 C 10 b 2
a) 8     b)  10     c) 12   d) 14

8)If MOHAN is represented by the code KMFYL, then COUNT will be represented by
A) AMSLR     B) MSLR      C) MASRL       D)SAMLR

9)  32     33      37    46     62    ?
Replace ? by
A)85          B) 87         C) 94          D) 99

10)AZ       DW        GT       JQ     ?
Replace ? by
A) LD            B) MN            C) MO             D) NM

11) In certain code language ,PUNE is written as SXQH.How would you write DELHI in this language?
A )  FGNJL
B )  FGNJK
C )  GHOKM
D )  GHOKL

12)Find odd man out:
A)  6
B ) 18
C )  24
D )  36

13)Find the wrong term in the following series:
68    66     62    59     56    53
A)  59
B)  62
C)  66
D)  68

14)If P is the brotherb of Q;Q is the son of R; Sis R's father .What is P of S?
A)  Son
B)  Brother
C)  Grandson
D)  Grandfather

15) The missing number in the series 40 , 120 , 60 , 180 , 90 , ? , 135
A)  110
B)  270
C)  105
D)  210

16) The length and breadth of  a rectangle are changed by +20% and by -10% respectively.What is the percentage change in the area of rectangle?
A)  10%
B)  12.5%
C)  8%
D)  15%

17) Two pipes A and B can fill a tyank in 15 minutes and 20  minutes respectively .Both the pipes are opened together but after 4 minutes,pipe A is turned off. What is the total time required to fill the tank?
A) 10 min.40 sec
B) 11 min.45 sec
C) 12 min.30 sec
D)  14 min.40sec

18)The odd number from 1 to 45 which are exactly divisible by 3 are arranged in an ascending order .The number at 6^th position is
A)  18
B)  24
C)  33
D)  36

19)If the radius of a circle is increased by 50%  ,the perimeter of the circle will increase by

A) 30
B)  85/2
C)  170/3
D)  110

20) In code language, the word BAD is written as 658 .In the same language ,what could be the code for FIG?

A)  9         12           10

B) 10        13           11

C)  8         11           13

D)  10       12           13

Click here for more questions

Database- SQL

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• SQL stands for structured Query Language. 
• SQL is an ANSI  (i.e. American National Standards Institute  ) standard computer language for accessing and manipulating database systems.
• SQl statements are used to retrieve and update data in a database.
• SQL works with database programs like MS Access ,DB2,Informix ,MS SQL Server, Oracle ,Sybase,etc.
• The first version ,initially called SEQUEL,was designed to manipulate and retrieve data 
• SQL is a Non - procedural query language.
• Sometimes referred to as a Database Gateway Language as an ANSI made it a standard language for all DBMS.

SQL commands are divided into following categories:-
1)Data Definition Language-
                   It uses create,alter,drop,truncate
2)Data Manipulation Language -
                   It uses insert ,update,delete
3)Data Query Language -
                   It uses select
4)Data Control Language
                   It uses grant ,revoke
5)Transaction control Language
                   It uses commit,rollback
Syntax:
Create-  CREATE TABLE tablename(columnname1 data_type (size)[constraints],(columname2 data_type (size)[constraints],....)

Alter- ALTER TABLE tableman ADD(<columnname> data_declaration[constraints],<columnname> data_declaration[constraints],.....);

 To delete  Drop - DROP TABLE <tablename>[CASCADE CONSTRAINTS];

Truncate Table<tablename>;
removes all rows from a table and is high speed data deletion statement.


Click here for solve the quiz on sql

Mathematics

Enter any number in the below text box and get the multiplication table of that number after clicking on the button next to it.

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MULTIPLICATION TABLES

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Do addition of any two numbers by entering the numbers below:

ADDITION +

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Do subtraction of any two numbers by entering the numbers below:

SUBTRACTION -

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Do division of any two numbers by entering the numbers below:

DIVISION /

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Do multiplication of any two numbers by entering the numbers below:

MULTIPLICATION *

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Number	Prefix	Symbol
10 1	deka-	da
10 2	hecto-	h
10 3	kilo-	k
10 6	mega-	M
10 9	giga-	G
10 12	tera-	T
10 15	peta-	P
10 18	exa-	E
10 21	zeta-	Z
10 24	yotta-	Y

Number	Prefix	Symbol
10-1	hecto-	h
10-2	kilo-	k
10-3	mega-	M
10-6	giga-	G
10-9	tera-	T
10-12	peta-	P
10-15	exa-	E
10-18	zeta-	Z
10-21	yotta-	Y
10-24	yocto-	Y

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Algebraic equation :

x² - y² =(x+y)(x-y)

(x+y)² = x² + 2xy + y² 
(x-y) ² = x² - 2xy + y²

Cryptography and Security

Your browser does not support the HTML5 canvas tag. Cryptography is the art and science of achieving security by encoding messages to make them non-readable.

Cryptanalysis is the technique of decoding messages from a non-readable format back to readable format without knowing how they were initially converted from readable format to non-readable format.
Cryptology is a combination of cryptography and cryptanalysis.

Principles of Security:-
1)Confidentiality
2)Integrity
3)Authentication
4)Access control
5)Availability
6)Non-repudiation
7)Ethical and legal issues

Types of attacks:-
1)General attacks-Criminal attacks,publicity attacks,legal attacks
2)Technical view-a)Theoretical concepts-
I)Passive attacks-i)release of message contents ii)traffic analysis
II)Active attacks-i)Interception,ii)Fabrication,iii)Modification,iv)Interruption
3)Program attack-
a)Virus- A virus is a computer program that attaches itself to another legitimate program and causes damage to the computer system or to the network.
During lifetime ,a virus goes through four phases:-
Dormant phase,Propagation phase,Triggering phase ,Execution phase.
b)Worm
A worm does not perform any destructive actions and instead ,only consumes system resources to bring it down.
c)Trojan Horse
It allows an attacker to obtain some confidential information about a computer or a network.
d)Specific attacks-
Sniffing and spoofing-cause packet level attacks.
Phishing-It is new attack which attempts to fool legitimate users to provide their confidential information to fake sites
Pharming  /DNS spoofing -attack involves changing the DNS entries so that users are redirected to an invalid site,while they thinking that they have connected to the right site.

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