The only number that goes into both 3 and 4 is 1.
one
Just 1.
3 and 3/4. 4 goes into 15 3 times with 3 left over.
Just 1.
61
60
The only whole number that does that is ' 1 '.
The only number that goes into both 3 and 4 evenly is 1.
Seven and tree are both prime numbers, so the only number that goes into both of them is one.
One.