168
Yes, because 7 divides evenly into 168 with no remainder.
24, 48, 72, 96, 120, 144, 168, 192 +24 . . .
2520
24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264 +24 . . .
Not evenly.
72 does not go into 101 evenly.
Yes, because 72 can go into 72 evenly.
Not evenly.
168
The hcf of 60 and 72 is 12
2.
The number is 8.
42 will not divide evenly into 72. You an divide 42 into 72 but there will be a fraction.
9
3
Yes, 18 times