HOW DO U DO THIS. I NEED THE ANSWER AND EXPLANATION.

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

Michelle is planting flowers in her garden. she wants the ratio of daises to carnations to be 3 to 2. michelle wants to plant a total of 35 flowers. how many daises should she plant?