 Hello and welcome to the session. The question says, write the negations of the following statements. One of the techniques to deepen the understanding of the mathematical statement is denial of the statement. This technique is to ask not only what it means to say that a given statement is true, but also what it would mean to say that the given statement is not true. In this question we shall write the negation of the statement by using the phrases like, it is not the case or it is false or just writing not or sometimes negation of a statement is found by removing not from the statement. So the concept of negation of a statement is the denial of a statement is called the negation of a statement. So this is the key idea we are going to use in this problem to solve it. The first one is Chennai is the capital of Tamil Nadu. So its negation is Chennai is not the capital of Tamil Nadu. So this completes the first part. Now let's proceed on to the second part. It says root 2 is not a complex number. The negation of this statement will be root 2 is a complex number. We have removed not from the statement. Now let's move on to the third part. It says all triangles are not equilateral triangles. Now the negation of this statement will be all triangles equilateral triangles. So this completes the third part. And now proceeding on to the fourth part which says the number 2 is greater than 7. Now the negation of this statement is the number 2 is not greater than 7. And now moving on to the last part which says every natural number is an integer. The negation of this statement will be every natural number is not an integer. So this completes the last part also. Hope you have understood it. Take care and have a good day.