Question 2 Write a C program to print an array after removing the duplicate elements Question 3 Write a C program to perform matrix multiplication Question 4 Consider the following set of commands for stack a. Stack S = stack_new) b.push(10), push(20), push(30),popo.pop).push(40), pop(), pop() Show stack content after each operation and assume the stack to be empty initially. What will happen if another pop() operation is performed after the final operation? Question 5 Write a C program to perform Insertion Sort on the following array and print the sorted result arr = 10, 8, 12, 6, 7, 9, 4, 3, 15, 13. 2. 1. 11,5, 14 Question 1- Use C programming to print the following pattern: 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 Ounction 2