There is no such number. Every number can be multiplied by 3 and every number can be multiplied by 4.
The two numbers that add to give 1 and multiply to give -4 are 4 and -3. When you add them, 4 + (-3) = 1, and when you multiply them, 4 × (-3) = -12. So, the correct answer is 4 and -3.
-1
2 and 6 3 and 4
Divide 4 by 2, then multiply by 3 and then add 4
-7
-1
The numbers are 3 and 4
-13
There are 4 of them which are 2*3*3*3 = 54
1188
You can multiply the numbers 4, 4, and 4 to get 64, since (4 \times 4 \times 4 = 64). Alternatively, you could use the numbers 2, 4, and 8, as (2 \times 4 \times 8 = 64) as well.
-17