First compute the whole number of the possibilities :
10*9=90.
Compute the number of favorable possibilities:
There is 5 even numbers. Once we pick an even number,
we pick 5. So the number of the favorable possibilities is 5.
Now we compute the probability like this:
This question is about the GREATEST COMMON FACTOR.
Supper Dishes: 5 10 15 20 25 30 35
Trash: 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35
Vacuums the House: 7 14 21 28 35 42
He will have to do all three chores on the same day every 35 day.
False, it would end up being st / r