Answer:
import random
last_name = input("Enter last name: ")
first_name = input("Enter first name: ")
number = random.randint(1, 10)
user_name = first_name[0] + last_name + str(number)
print(user_name)
Step-by-step explanation:
*The code is in Python.
import the random to generate a random number
Ask the user to enter the last_name and first_name
Generate a random number between 1 and 10 using randint() method
Set the user_name as first letter of the first name (use indexing, the item in the index 0 is the first letter) and last name and the number you generated
Print the user_name