Q8:

How many integers from 0 to 50, inclusive, have a remainder of 1 when divided by 3 ?

A.    15

B.     16

C.     17

D.    18

E.     19

Answer: C

我选B

因为从最小的4 到49 一共是 (49-4)/3 +1 = 16 个

不知道哪里少了一个。