There is no such number.
If a multiple of 4 is a factor of 30, then 4 must also be a factor of 30, but 4 is not a factor of 30 (the factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30), thus no such number exists.
12 is the only two digit number which is a factor of 12.
Divide the 2-digit number by the 1-digit number. If the quotient comes out a whole number, then the big one is a multiple of the small one.
70
the answer is 70!!
10, 20, 25, 50
Divide the two-digit number by the one-digit number. If the remainder is zero then the 2-digit number is a multiple and if not, it is not.
12 is the only two digit number which is a factor of 12.
Yes.
Divide the 2-digit number by the 1-digit number. If the quotient comes out a whole number, then the big one is a multiple of the small one.
No two digit prime number exists that is a multiple of 7. All two digit numbers that are multiples of 7 are compositenumbers.
14 is a factor of 532.
50
The two-digit factors of 100 and 1000 are all composite.
90
12 and 24
11 and 33
Both 10 and 20 are two-digit numbers that are factors of 20.