以下是我在做OG时遇见的问题,望各位大侠帮忙解答困惑~小弟跪谢了% S0 M& e& [) |4 Q, G2 l
P462 第13题' {: M5 [% [+ W2 Y% V, v0 J( V
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P 535 第15题 5 q) R' c/ t! SA measuring cup contains 1/5 of a cup of orange juice.it is then filled to the 1 cup mark with mixture that contains equal amounts of orange ,grapefruit, and pineapple juices. What fration of the final mixture is orange juice?+ e% j7 y2 k3 Y6 O1 p; ~, B
My answer is (1/5+1/3)/(1+1/5) ; y9 v7 @, ]* {. L# D) N8 X: ?. d % L2 C( K. N2 I3 w. l8 @; t2 QP613 第9题 * c" P4 M& G( }8 O8 h5 w
The number that results when an integer is multiplied by itself CANNOT end in which of the following6 \# A" y) x" i- q) c
a) 1& g! c$ t6 M3 U" H/ {9 V- C$ \# I6 x
b) 4 1 r2 {$ M* Z- ~/ I- rc) 5: ]$ m+ @ W5 e6 \& |1 U9 r0 N
d) 6 ; n9 J" l9 [" t1 g6 ?1 we) 8 5 @9 ~$ m: _( Z/ J& Y" ^ 9 x1 `6 m+ I6 G4 @4 z( HP 721 第17题 ) B/ E& g+ {# i0 a
What is “the whole number remainder” & j4 B" z, ^ A, Z ) p( z+ z6 W+ Y0 ^* P3 c/ {6 y
P 793 第9题3 C" R8 ]0 G [, n. M- N# G. z
If k (2x+3) (x-1) = 0 and x>1 ,what is the value of k? 6 R+ R0 b; x. H1 j- \a) -3/28 ^! ?) u7 \: w y
b) 0 4 ` t% a) f5 U6 K/ @/ Sc) 2/3* f4 M/ o. U$ V3 F7 W
d) 1 2 q0 H5 l/ L" F: O1 de) 2 * a& s1 \8 C& D1 ?" w4 b" ^9 h 1 N! l6 r0 C' |# H3 \& u
P 795 第18 题. K( z8 K- H2 B* C9 O U: x$ P
The figure above shows part of a circle whose circumference is 45. if arcsof length 2 and length b continue to alternate around the entire circle so that there are 18 arecs of each length , what is the DEGREE measure of each of the arcs of length b?(图我就不贴了) ( S0 Z2 a* Y7 Va) 4°1 ^; A: Z% Z6 L: r$ g2 v0 q
b) 6°# }8 G) _6 s6 Z; r2 h/ D
c) 10°! p" H B# m/ Y; P: Q
d) 16° 4 F. R* a# Y* ` l* T5 b; We) 20° q6 x$ Y+ L0 T: o; f0 o! {$ ~
0 c/ o+ S3 L" a5 K5 B# s5 F7 }6 m5 b# uP 807 第14题 ; X0 @4 d1 N$ w# l VIf n and p are integers greater than 1 and if p is a factor of both n+3 and n+1 , what is the value of p? 6 G3 f2 X+ z% ?- Ba) 3# M/ C2 P. ^$ j$ O3 U4 y0 U! H
b) 7 & u6 J* S6 k1 r1 u/ K4 ~c) 10 5 V% U; O* w% V" i, C% ld) 13 8 A, E: b b7 T8 }e) 302 U* p2 T( G0 f8 m0 w+ [
My question is what is “factor”