alan has forgotten his four digit pin code he knows the second digit is 3, and the 4 digits make a number divisible by 5 how many different sets of 4digits could it be

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

The correlation coefficient between the number of students and marks obtained in end semester exam. (13 marks) give the statistical meaning of the relationship between the number of students and marks b. obtained in end semester exam. (3 marks) draw the number of students and marks obtained in end semester exam scatter diagram c. (4 marks) check list write your name and id corectly write the question number properly use your own calculator. show all the steps to solve the problems. use the correct formula. answer in provided time. don't use your mobile for any purpose. write your answer up to two decimal places