It is one
Just 1.
The number 7. 7 goes into 21 3 times; 7 goes into 49 7 times.
Just 1.
not one number goes into 6 and 7 unless it is 1. the numbers 1, 2, 3, and 6 go into 6. only 1 goes into 7 because 7 is a prime number
1. 1x3=3 1x7=7
3 & 7.
105
They are: 2, 3 and 7
1, 3, 7, 21.
They are all divisible by 1 which is their HCF
It looks to me like 3 may be the next number since it goes +7, -7, +3, +3, -7, +7, -7, then maybe +3, +3 again. Anybody else see something different?
The HCF of the given three numbers is 1
Any of its 3 factors which are 1, 7 and 49
Seven and three are both prime numbers, therefore their only factors are one and itself. Nine's factors are 9,1, and 3. 3 Goes into 3 evenly, but doesnt go into 7 evenly. Therefore the only number that fits into 9, 7, and 3 evenly is 1. Hope this helps!
a larger negative number. For example subtracting +4 from -3 results in -7. It goes like this: -3-(+4) = -3-4 = -7.
i dont know if it counts as a mixed number but 3 should be the answer because 7 goes into 21 EVENLY 3 times and there is nothing left over.