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Vera_Pavlovna [14]
3 years ago
15

If we are using an 4-character password that contains only lowercase English alphabetic characters (26 different characters), ho

w many *more* possible passwords are there if we use a 5-character password (still only lowercase English alphabetic characters?
Computers and Technology
2 answers:
Trava [24]3 years ago
6 0

Answer:

11,424,400 possible passwords

Explanation:

Since all characters are letters and only lowercase

we have 26∧4 = 456,976 possibilities

For a 5-character password which is still lower case sensitive.

we have 26∧5 = 11,881,376 possibilities

Many more possible passwords = (11881376-456976)

= 11,424,400 possible passwords

slavikrds [6]3 years ago
4 0

Answer:

If we are using a 4-character password that contains only lowercase alphabets and repetition of these alphabets are allowed then the possible passwords are:      

26 * 26 * 26 * 26 = 26 ^ 4 = 456976

If we are using a 4-character password that contains only lowercase alphabets and repetition of these alphabets are not allowed then the possible passwords are:

n! / (n - r )! = 26! / (26 - 4)! = 358,800

Explanation:

If we are using a 5-character password that contains only lowercase alphabets and repetition of these alphabets are allowed then the possible passwords are:

26 * 26 * 26 * 26 * 26 = 26 ^ 5 = 11881376

If we are using a 5-character password that contains only lowercase alphabets and repetition of these alphabets are not allowed then the possible passwords are:

n! / (n - r )! = 26! / (26 - 5)! = 7893600

how many *more* possible passwords are there if we use a 5-character password:

Possible passwords when we use 5 character passwords - Possible passwords when we use 4 character passwords.

11881376 - 456976 = 11424400

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Monster Collector
Lera25 [3.4K]

Answer:

In java:

import java.util.*;

public class Main{

public static void main(String[] args) {

 Scanner input = new Scanner(System.in);

 int monsternum, usernum;

 int count = 0;

 Random rand = new Random();

 String [] monsters = {"wild pikamoo","wild bulbaroar"};

 for(int i =0;i<2;i++){

     monsternum = rand.nextInt(5);  

     System.out.print("A "+monsters[i]+" appears! Guess a number between 1 and 5: ");

     usernum = input.nextInt();

     if(monsternum == usernum){      count++;      System.out.println("Congratulations, you caught a "+monsters[i]+"!");  }

 else{      System.out.println("You almost had it, but the monster escaped.");  }

 

 }

 System.out.println("There are no more monsters to encounter!");

 System.out.println("You caught "+count+" monsters of 2");

 if(count!=2){      System.out.print("Keep training to be the very best!");  }

 else{      System.out.print("You're the monster collector master!");  }

}

}

Explanation:

This declares monster and user number as integers

 int monsternum, usernum;

Initialize count to 0

 int count = 0;

Call the random object

 Random rand = new Random();

Create a string array to save the monster names

 String [] monsters = {"wild pikamoo","wild bulbaroar"};

Iterate for the 2 monsters

 for(int i =0;i<2;i++){

Generate a monster number

     monsternum = rand.nextInt(5);  

Prompt the user to take a guess

     System.out.print("A "+monsters[i]+" appears! Guess a number between 1 and 5: ");

Get user guess

     usernum = input.nextInt();

If monster number and user guess are equal, congratulate the user and increase count by 1

<em>      if(monsternum == usernum){      count++;      System.out.println("Congratulations, you caught a "+monsters[i]+"!");  } </em>

If otherwise, prompt the user to keep trying

<em>  else{      System.out.println("You almost had it, but the monster escaped.");  }  </em>

<em>  } </em>

Print no monsters again

 System.out.println("There are no more monsters to encounter!");

Print number of monsters caught

 System.out.println("You caught "+count+" monsters of 2");

Print user score

<em>  if(count!=2){      System.out.print("Keep training to be the very best!");  } </em>

<em>  else{      System.out.print("You're the monster collector master!");  } </em>

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Answer:

1. It has a clear objective.

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The answer is D.

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Answer:

A

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