[求助]问两道GWD数学题，实在没思路~~~

Q32:

What is the remainder when the two digit, positive integer x is divided by 3?

(1)     The sum of the digits of x is 5.

(2)     The remainder when x is divided by 9 is 5.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.  

答案D

Q20:

A collection of 36 cards consists of 4 sets of 9 cards each.  The 9 cards in each set are numbered 1 through 9.  If one card has been removed from the collection, what is the number on that card?

(1)     The units digit of the sum of the numbers on the remaining 35 cards is 6.

(2)     The sum of the numbers on the remaining 35 cards is 176.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

答案D

谢谢！5月8号考，现在数学还是要错7个以上，怎么办啊！

Q20:

A collection of 36 cards consists of 4 sets of 9 cards each.  The 9 cards in each set are numbered 1 through 9.  If one card has been removed from the collection, what is the number on that card?

(1)     The units digit of the sum of the numbers on the remaining 35 cards is 6.

(2)     The sum of the numbers on the remaining 35 cards is 176.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

答案D

谢谢！5月8号考，现在数学还是要错7个以上，怎么办啊！

第一题，选D啊，没问题啊，余数都是2

第二题，抽出那个card一定是4，也没问题啊，因为total=45*4=220,then only 4 extracted,then The units digit of the sum of the numbers on the remaining 35 cards is 6.
            

do you understand?

do you understand?

understood!Thanks!