Answer:
4(1)(2) = 8
Step-by-step explanation:
Consider the addition in the unit digits.
z +7 + 5 = z + 12
and the unit digit of this sum should be 4 since the unit digit of the answer is 4.
Also, since z is a number from 0 to 9, the only possibility is z = 2.
Hence, the unit digit sum is 14 and the carry over is 1.
Now, consider the tenth digits sum with previous carry over 1.
1 + 4 + 2 + x = y1
7 + x = y1
Since, x and y are numbers from 0 to 9, the only possibility is x = 4 and hence
7 + 4 = y1
11 = y1
y = 1
So, x = 4, y = 1, z = 2
(x)(y)(z) = (4)(1)(2) = 8
