eries: A triangle number counts the objects that can form an equilateral triangle. The nth triangle number is the number of dots or balls in a triangle with n dots on a side; it is the sum of the n natural numbers from 1 to n. • The formula for the nth triangular number can be expressed as: ?? = ∑ ? ? ?=1 = 1 + 2 + 3 + ⋯ + ? = ?(? + 1) 2 = ( ? + 1 2 ) • The first few triangular numbers are: 0, 1, 3, 6, 10, 15, …… • Pictorially, the triangular numbers can be represented as below: Write a program that generates the triangular number series from the first term up until the n th term. In your program, the user will enter the n number, choose a large number! The sequence should be printed in t

eries: A triangle number counts the objects that can form an equilateral triangle. The nth triangle number is the number of dots or balls in a triangle with n dots on a side; it is the sum of the n natural numbers from 1 to n. • The formula for the nth triangular number can be expressed as: ?? = ∑ ? ? ?=1 = 1 + 2 + 3 + ⋯ + ? = ?(? + 1) 2 = ( ? + 1 2 ) • The first few triangular numbers are: 0, 1, 3, 6, 10, 15, …… • Pictorially, the triangular numbers can be represented as below: Write a program that generates the triangular number series from the first term up until the n th term. In your program, the user will enter the n number, choose a large number! The sequence should be printed in t

EBK JAVA PROGRAMMING

8th Edition

ISBN:9781305480537

Author:FARRELL

Publisher:FARRELL

Chapter2: Using Data

Section: Chapter Questions

Problem 12PE

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PYTHON PROGRAMMING Reza Enterprises sells tickets for buses, tours, and other travel services. Because Reza frequently mistypes long ticket numbers, Reza Enterprises has asked his students to write an application that shows if a ticket is invalid. Your application/program tells the ticket agent to enter a six-digit ticket number. Ticket numbers are designed so that if you lose the last digit of the number, then divide by 7, the remainder of the division is exactly the same to the last dropped digit. This process is shown below: Step 1: Enter the ticket number; for example 123454 Step 2: Remove the last digit, leaving 12345 Step 3: Determine the remainder when the ticket number from step 2 is divided by 7. In this case, 12345 divided by 7 leaves a remainder of 4. Step 4: Display a message to the ticket agent indicating whether the ticket number is valid or not. If the ticket number is valid, save the number to a .txt file called “tickets.txt” and continue to loop your program…
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