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3 years ago

Everybody at a company is assigned a unique 9 digit ID. How many unique IDs exist?

Computers and Technology

1 answer:

timama [110]3 years ago

3 0

Answer:

3,265,920 unique ID exist.

Explanation:

The nine digits are from 0 to 9, there are ten bits from 0 -9,

0, 1, 2, 3, 4, 5, 6, 7, 8, 9

The first is select from the highest bit (9), and the second is selected at random from 0 - 9, the third bit to the last must be unique and different from each other;

number of unique IDs = 9 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2

Multiplying the nine bits of unique IDs = 3,265,920.

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Write a program that prompts the user for a word or phrase, and determines if the entry is a palindrome. A palindrome is a word

vekshin1

Answer:

Explanation:

The following code is written in Python. It asks the user for an input. Then cleans the input using regex to remove all commas, whitespace, and apostrophes as well as making it all lowercase. Then it reverses the phrase and saves it to a variable called reverse. Finally, it compares the two versions of the phrase, if they are equal it prints out that it is a palindrome, otherwise it prints that it is not a palindrome. The test case output can be seen in the attached picture below.

import re

phrase = input("Enter word or phrase: ")

phrase = re.sub("[,'\s]", '', phrase).lower()

reverse = phrase[::-1]

if phrase == reverse:

print("This word/phrase is a palindrome")

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print("This word/phrase is NOT a palindrome")

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3 years ago