gre数学考试关于算术的重点试题(4)

会计考友

31.The number of different prime factors of 48
    The number of different prime factors of 72
    答案：C
    32.The number of different positive divisors of 12
    The number of different positive divisors of 50
/ F! p9 ]) Y( q8 G4 y8 x    答案：C
    33.The number that is as much greater than 63 as it is less than 101
    答案：B
) z/ h/ W* Z8 ^% g% K1 c6 [    34. A K-number is a positive integer with the special property that 3 times its units‘ digit is equal to 2 times its tens’digit.
! Y, t5 T1 d8 Q3 x0 n8 m$ [9 L5 M, j5 ?    The number of K-numbers between 10 and 99
+ V" s0 J! L5 _% g    答案：C
: {7 Q" H9 e+ L& ~# R! C    35.Of the following which is greatest？
    A.1/2
: s; u8 r' @) R  A. Y! W$ |    B.7/15
    C.49/100
# X9 T2 a* ?/ @4 I, z    D.126/250
8 l( O; E- Z  k: |    E.1999/4000

% e7 a" J% I  a) a    答案：D

会计考友

</p>    36.If n=pqr， where p，q， and r are three different positive prime numbers， how many different positive divisors does n have， including 1 and n？
1 b- Y& w) \  }% b) R    A.3
- A( b# L+ P( U; I. d3 t    B.5
    C.6
    D.7
; C- x$ `# f$ q% R8 m- L) ^9 I    E.8
    答案：E
/ N% ]" {8 A+ c; b    37.11*13*17*19*23
    A decrease of 1 in which of the factors above would result in the greatest decrease in the product？
" R/ G  [7 u& p    A.11
    B.13
    C.17
4 G, N* S! k2 }; n8 c0 l$ N    D.19
. P/ x# w2 J2 f; ~8 R; H    E.23
/ N0 g0 X9 z# w0 a  r/ [) ^    答案：A
    38.Which of the following numbers is not the sum of three consecutive odd integers？
9 K! y  _( y" \- x$ C    A.15
9 q+ p* A% Q' Z9 G" V! Z) V    B.75
    C.123
' j5 x1 z& B+ B5 U5 K2 b$ @    D.297
    E.313
- J" X1 G  G* e) @; M    答案：E
) R, g' S' C6 |( }' `& \    39.A dresser drawer contains 15 garments. If 40 percent of those garments are blouses， how many are not blouses？
    A.6
1 t# G" O' Y+ @( d( }" q; Q6 z+ |    B.8
3 M0 g* E2 w5 Q2 A  W    C.9
- E, [4 O; }; l4 U" z: j9 y    D.10
    E.12
; Z6 h6 E# L1 s7 B: h    答案：C
    40.If a certain company purchased its computer terminals for a total of $540，400 and each of the terminals was purchased for $350， how many terminals did the company purchase？
- b) v) j+ b+ w+ G' b$ x, u8 J0 N    A.1，624
( Q. _; Q6 y1 u# m5 Q    B.1，544
    C.1，434
    D.1，384
    E.1，264
    答案：B