What are the partial products of 42 x 28

Abag contains pieces of paper numbered from 5 to 9. a piece of paper is drawn at random. what is the theoretical probability of drawing a number less than 8?

Random variables x poisson~ ( a) ,y poisson ~ ( a) . x and y are independent. if 2 1, 2 1. u =2x+ y-1, v=2x- y +1. find: ) cov (u ,v ).

Swimming fleury swam 6 laps the first day,15 laps the second day,24 laps the third day, and so on.on which day will fleury swim 51 laps if the pattern continues?