If one of the followings is the product of the two 3-digit integers 8K1 and 6L5 (K and L denote the tens digit of the respective integers), then that product must be
Choose one.
A) 478,823
B) 511,913
C) 531,875
D) 538,424
E) 569,114
To know the unit digit you can multiply both digit number: 1 x 5 = 5   This eliminates A, B, D, and E, because the number must end with a 5   So the answer is 531,875
<result>C</result>
If one of the followings is the product of the two 3-digit integers 8K1 and 6L5 (K and L denote the tens digit of the respective integers), then that product must be