SAT Math Practice Question #25922 - SATify | SATify

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SAT Math Practice Question #25922 - SATify | SATify

#25922

number theory

divisibility

Totient Function

medium

90 sec

The 5-digit numbers $\underline{3 X 4 Y 5}$ and $\underline{7 Y 2 Z 1}$ are each multiples of 3. Which of the following could be the value of $Z$ ?

A.

1

B.

3

C.

5

D.

7

E.

9