Answer:
8
Step-by-step explanation:
The greatest common divisor or highest common factor can be found by considering the factors of the 3 numbers
factors of 8 are 1, 2, 4, 8
factors of 16 are 1, 2, 4, 8, 16
factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24
The common factors are 1, 2, 4, 8
the greatest common factor is 8
Thus the greatest common divisor of 8, 16 and 24 is 8
