GWD 25-7,10,16

autumnjin

Q7

If n is a positive integer, what is the remainderWhen (7^(4n+3))(6^n) is divided by 10?

A.      1

B.      2

C.      4

D.     6

E.      8

Q10

The sides of a square region, measured to thenearest centimeter, are 6 centimeters long. The

least possible value of the actual area of thesquare region is

A.36.00 sq cm

B.35.00 sq cm

C.33.75 sq cm

D.30.25 sq cm

E.25.00 sq cm

Q16

If √x is an integer, what is the value of √x?

(1)    11<x<17

(2)    2<√x<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.

himba

Q7

=(7^3)*((7^4))^n*6^n

7^3=343

6^n 的个位是6

7^4个位是1

所以(7^(4n+3))(6^n) 的个位是8

E is the best

Q10

 

5.5^2=30.25

D is the best

Q16

E is the best

从1得出x为9 OR 16

从2得出x为9 or 16

x 不唯一

5.5^2=30.25

D is the best

Q16

E is the best

从1得出x为9 OR 16

从2得出x为9 or 16

x 不唯一

Jarod

Q7 let n=1

Q10 the least of all the numbers measured to the nearest centimeter 6  is 5.5, S=5.5^2=30.25

Q16 I don;t see the correlation between the question and the 2 given statements, so, E