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标题: GWD 25-7,10,16 [打印本页]

作者: autumnjin 时间: 2006-8-26 07:23 标题: GWD 25-7,10,16

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.

作者: Jarod 时间: 2006-8-26 19:55

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

作者: himba 时间: 2006-8-27 07:07

=(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

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