1. Write a pseudo code that performs the following: Ask a user to enter a number. If the number is between 10 and 20, write the word Hello. If the number is between 20 and 30, write the word Nice. If the number is between 30 and 40, write the word Hi. If it is any other number, write that it is not a correct option. [3 marks] a. Write a pseudocode to find the area of triangle. [3 marks] b. Write a pseudocode to find the greatest of three numbers. [5 marks] c. Draw a structured flowchart on how to study for an exam. Include at least two decisions and two loops. [3 marks] d. Give different reasons for writing the programs in structured manner. [4 marks]