 Hello and welcome to the session. My name is Mansi and I am going to help you with the following question. The question says, find the distance between the following pairs of points. The first part is 2, 3, 5 and 4, 3, 1. Before starting with the solution, let us see the key idea behind the question. That is, if the point P that is x1, y1, z1 and the point Q, x2, y2, z2 are two points then the distance between them with PQ is given by square root of x2 minus x1 the whole square plus y2 minus y1 the whole square plus z2 minus z1 the whole square. So, using this formula we find out the distance between the points 2, 3, 5 and 4, 3, 1. So, let us start with the solution to this question. Let the point P be 2, 3, 5 and the point Q be 4, 3, 1. So, we can say that PQ that is distance between P and Q is given by square root of 4 minus 2 the whole square plus 3 minus 3 the whole square plus 1 minus 5 the whole square. And this is equal to square root of now 4 minus 2 is 2. So, 2 square plus 3 minus 3 is 0. So, 0 square is 0 plus 1 minus 5 is minus 4. So, minus 4 the whole square this is equal to square root of square of 2 is 4. Now, minus 4 into minus 4 gives us 16 because when minus sign gets multiplied with another negative sign it becomes positive. So, we have 4 plus 16. Now, 4 plus 16 is 20. So, we have square root of 20 and this can be further written as 2 root 5 units. So, our answer to this question is that distance between 2, 3, 5 and 4, 3, 1 is 2 root 5. So, this is our answer to the question. I hope that you understood the question and enjoyed the session. Have a good day.