CORE JAVA CHALLENGES 1) Write a program to multiply two numbers and display the result. Code : import java.util.Scanner; class venkat1{ public static void main(String[] args) { System.out.println("Question No : 1\n\"Write a program to multiply two numbers and display the result.\""); System.out.println("\t\t[Multiply two numbers]"); Scanner sc=new Scanner(System.in); System.out.print("\nEnter first number a value :"); int a=sc.nextInt(); System.out.print("\nEnter secound Number b value :"); int b=sc.nextInt(); int result = a * b; // Multiply two numbers / System.out.println("\nResult = " + result); } } Output: Question No : 1 "Write a program to multiply two numbers a...