Visual Basic Answers

Find latitude and longitude of utmost 20 countries, ordered by population, with a population greater or equal to the population limit given below and have atleast one currency exclusively for themselves. (countries like Madagascar, Sri Lanka but not India, USA). Use the country details from this dataset.

Your task is to find the sum of the length of all lines (in kms) that can be drawn between co-ordinates of these countries.

Write a program to enter (15) numbers by using inputbox satement, then find (1):the average of positive numbers, (2):the summation of negative numbers, print the results in textboxes

Q: By using select case statement write a program to find the value of (z) form the following equations, print the value of (z) in textbox.

Z = A² - 3A + 2

A = 0

Z = A' + ++

Z=√10-2A

A> 0

A < 0

Write a python program implementing a stack data structure, implement your solutions using approaches below

a) the pythonds package(stack)

1 insert the names of big five animals (arrange them in order of size=>as follows Elephant (approximately 5tonnes+) rhinoceros (approximately 2tonnes) buffalo (650kg),lion(225kg),and leopard (96kg)

2) return the name elephant

3)return the name leopard infinitely

4) display the index of the animal elephant and lion after searching

5) return the first and last element (name of animal) when the elements are sorted in ascending order

Write a python program using conditional statements design a login where a user will enter a username and password

A) on successful login a welcome message is displayed

B) on 3 attempts an invalid message is displayed informing the user of the attempts remaining

C)on the fourth unsuccessful attempt the program will exit and inform the user of failed attempts

A list box can be bound or connected directly to a data table. true or false

Write a VB program to allow insert and remove student’s data into a Data Grid View. Then, write a button event to allow saving the data into a txt file.

STEP 1: Set the headers of the Data Grid View when Form.Load.

STEP 2: Click the Insert button to insert the entered data as a row in the Data Grid View. Click the Remove button to remove the selected row.

STEP 3: click the Save button to save the rows data as a comma separated text into a text file.

The interface should be as followed:

StudentID:(Textbox), StudentName:(Textbox)

Course:(Textbox), Semester:(Textbox)

Insert(Button)

(DataGridView)

Remove(Button), Save(Button)

Define the following terms using practical examples and give the rationale for understanding these concepts in the data science world

A) data science

B) data analytics

C)data analysis

D) business intelligence

E)big data. ( 30marks)

1. Using the ErrorProvider control create an interface that 

Prompts user for name and age. 

Verifies that the name field is not empty, and the age is numeric

Should have a submit button

Be creative

2. Building the Coffee Shop application that Simulates the process of purchasing coffee. A ToolStrip control must hold various types of buttons and lists.

3. Creating a simple image album

Use a FlowLayoutPanel

Creates Picture Box controls at runtime 

Uses the FolderBrowserDialog control

Write a program implementing a stack data structure, implement your solutions using approaches below

a) the pythonds package(stack)

b)the numpy package(arrays)

C)(queue.Queue and or collections.deque

1 insert the names of big five animals (arrange them in order of size=>as follows Elephant (approximately 5tonnes+) rhinoceros (approximately 2tonnes) buffalo (650kg),lion(225kg),and leopard (96kg)

2) return the name elephant

3)return the name leopard infinitely

4) display the index of the animal elephant and lion after searching

5) return the first and last element (name of animal) when the elements are sorted in ascending order