A number is choosen at random from 1to10. find the probability of selecting factors of 4 and 6?

the factors of 4 are 4 2 1
Factors of 6 are 6 3 2 1

So the numbers which would count are
1 2 3 4 6

That's a total of 5 numbers
Out of
1 2 3 4 5 6 7 8 9 10
10 numbers

5/10 = 1/2 or 50%