1.If [a] indicates the greatest integer less than a,then ( )

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1.If [a] indicates the greatest integer less than a,then ( )
(A)a-1

1 如果 [a]是小于a的最大整数,那么 (D)
2 abc是连续的三个奇数,且b³=2197,则ac等于165
因为b³=2197 所以b=13 所以a=11 c=15 ac=165
3 因为根为1 所以p+5q=97 p=97-5q
q的取值为1到19的质数有 2 3 5 7 11 13 17 19八个
p对应的取值为87 82 72 62 42 32 12 2
只有p=2 q=19满足条件

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