15 of them are.
26
ask your teacher
10
Infinate
1.999 and 1.9999
2
90/15 = 6 which is an integer, not a mixed number.90/15 = 6 which is an integer, not a mixed number.90/15 = 6 which is an integer, not a mixed number.90/15 = 6 which is an integer, not a mixed number.
15/3 = 5 5 is an integer.
There are (15+24k) hours where k is an integer.
15.
Ten of them.