The 7-digit numbers 74A52B1 and 326AB4C are each multiples of 3. Which of the following could be the value C?

A (1) B (2) C (3) D (5) E (8)

74A52B1 and 326AB4C are multiples of 3 ... That means if we divide them by 3, we should get a whole number.

Lets assume A=1 and B=1,

So,

74A52B1 becomes 7415211

Now, lets divide it by 3.

7415211 / 3 = 2471737

Since we got a whole number as a quotient, we can safely say that A=1 and B=1.

∴ The second number 326AB4C becomes 326114C.

Now, lets assume C = 1.

So,

326114C becomes 3261141.

Now,

lets divide it by 3.

3261141 / 3 = 1087047

Since we got a whole number as a quotient, C = 1

∴The value of C is 1. So, answer choice A is correct.