It is: 1
Only the number one.
1, 2, 3, 6, 9, 18 go into 18 evenly.
4 and 2 goes into 36 and 100 evenly. 36/4=9 100/4=25 36/2=18 100/2=50
1, 5 and 25.
1, 5 and 25.
One.
Two.
2
1, 5, 25, 125.
Only the number one (1) goes evenly into both 25 and 27.
1,5,25,125 go into 125 evenly.1,2,4,5,10,20,25,50,100, go into 100 evenly.
The greatest common divisor (GCD) of 25 and 18 is 1, meaning that the only number that divides both 25 and 18 evenly is 1. This is because 25 is a product of 5², while 18 is a product of 2 and 3², and they share no common factors other than 1.